121232101 has 2 divisors, whose sum is σ = 121232102. Its totient is φ = 121232100.

The previous prime is 121232051. The next prime is 121232119. The reversal of 121232101 is 101232121.

121232101 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99980001 + 21252100 = 9999^2 + 4610^2 .

It is an emirp because it is prime and its reverse (101232121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121232101 - 2¹⁵ = 121199333 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121232191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616050 + 60616051.

It is an arithmetic number, because the mean of its divisors is an integer number (60616051).

Almost surely, 2^121232101 is an apocalyptic number.

It is an amenable number.

121232101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232101 is an equidigital number, since it uses as much as digits as its factorization.

121232101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121232101 is about 11010.5449910529. The cubic root of 121232101 is about 494.9247935262.

Adding to 121232101 its reverse (101232121), we get a palindrome (222464222).

The spelling of 121232101 in words is "one hundred twenty-one million, two hundred thirty-two thousand, one hundred one".