121512060511997 has 16 divisors (see below), whose sum is σ = 127087118296320. Its totient is φ = 115961387743872.

The previous prime is 121512060511981. The next prime is 121512060512023. The reversal of 121512060511997 is 799115060215121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121512060511997 - 2⁴ = 121512060511981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121512060511927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92252783 + ... + 93560675.

It is an arithmetic number, because the mean of its divisors is an integer number (7942944893520).

Almost surely, 2^{121512060511997} is an apocalyptic number.

It is an amenable number.

121512060511997 is a deficient number, since it is larger than the sum of its proper divisors (5575057784323).

121512060511997 is a wasteful number, since it uses less digits than its factorization.

121512060511997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317212.

The product of its (nonzero) digits is 340200, while the sum is 50.

The spelling of 121512060511997 in words is "one hundred twenty-one trillion, five hundred twelve billion, sixty million, five hundred eleven thousand, nine hundred ninety-seven".