121937985122 has 6 divisors (see below), whose sum is σ = 182907718443. Its totient is φ = 60968745642.

The previous prime is 121937985119. The next prime is 121937985131. The reversal of 121937985122 is 221589739121.

It can be written as a sum of positive squares in only one way, i.e., 60968992561 + 60968992561 = 246919^2 + 246919^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=246919.

It is a super-2 number, since 2×121937985122² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 370379 + ... + 617297.

Almost surely, 2^121937985122 is an apocalyptic number.

121937985122 is a deficient number, since it is larger than the sum of its proper divisors (60969733321).

121937985122 is an frugal number, since it uses more digits than its factorization.

121937985122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493840 (or 246921 counting only the distinct ones).

The product of its digits is 544320, while the sum is 50.

Multiplying 121937985122 by its sum of digits (50), we get a square (6096899256100 = 2469190²).

The spelling of 121937985122 in words is "one hundred twenty-one billion, nine hundred thirty-seven million, nine hundred eighty-five thousand, one hundred twenty-two".