121611646234231 has 2 divisors, whose sum is σ = 121611646234232. Its totient is φ = 121611646234230.

The previous prime is 121611646234229. The next prime is 121611646234301. The reversal of 121611646234231 is 132432646116121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121611646234231 - 2¹ = 121611646234229 is a prime.

It is a super-2 number, since 2×121611646234231² (a number of 29 digits) contains 22 as substring.

Together with 121611646234229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121611646237231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60805823117115 + 60805823117116.

It is an arithmetic number, because the mean of its divisors is an integer number (60805823117116).

Almost surely, 2^{121611646234231} is an apocalyptic number.

121611646234231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121611646234231 is an equidigital number, since it uses as much as digits as its factorization.

121611646234231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The spelling of 121611646234231 in words is "one hundred twenty-one trillion, six hundred eleven billion, six hundred forty-six million, two hundred thirty-four thousand, two hundred thirty-one".