121701924931 has 2 divisors, whose sum is σ = 121701924932. Its totient is φ = 121701924930.

The previous prime is 121701924913. The next prime is 121701924959. The reversal of 121701924931 is 139429107121.

Together with previous prime (121701924913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121701924931 - 2⁹ = 121701924419 is a prime.

It is a super-2 number, since 2×121701924931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121701924901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850962465 + 60850962466.

It is an arithmetic number, because the mean of its divisors is an integer number (60850962466).

Almost surely, 2^121701924931 is an apocalyptic number.

121701924931 is a deficient number, since it is larger than the sum of its proper divisors (1).

121701924931 is an equidigital number, since it uses as much as digits as its factorization.

121701924931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 121701924931 in words is "one hundred twenty-one billion, seven hundred one million, nine hundred twenty-four thousand, nine hundred thirty-one".