121712936917 has 12 divisors (see below), whose sum is σ = 143777091744. Its totient is φ = 102136728720.

The previous prime is 121712936911. The next prime is 121712936971. The reversal of 121712936917 is 719639217121.

It is not a de Polignac number, because 121712936917 - 2³ = 121712936909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121712936911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32734273 + ... + 32737990.

It is an arithmetic number, because the mean of its divisors is an integer number (11981424312).

Almost surely, 2^121712936917 is an apocalyptic number.

It is an amenable number.

121712936917 is a deficient number, since it is larger than the sum of its proper divisors (22064154827).

121712936917 is a wasteful number, since it uses less digits than its factorization.

121712936917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65472300 (or 65472287 counting only the distinct ones).

The product of its digits is 285768, while the sum is 49.

The spelling of 121712936917 in words is "one hundred twenty-one billion, seven hundred twelve million, nine hundred thirty-six thousand, nine hundred seventeen".