121950524172 has 24 divisors (see below), whose sum is σ = 285121480000. Its totient is φ = 40568709456.

The previous prime is 121950524161. The next prime is 121950524231. The reversal of 121950524172 is 271425059121.

It is a self number, because there is not a number n which added to its sum of digits gives 121950524172.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10176922 + ... + 10188897.

Almost surely, 2^121950524172 is an apocalyptic number.

121950524172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121950524172 is an abundant number, since it is smaller than the sum of its proper divisors (163170955828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121950524172 is a wasteful number, since it uses less digits than its factorization.

121950524172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20366325 (or 20366323 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 121950524172 in words is "one hundred twenty-one billion, nine hundred fifty million, five hundred twenty-four thousand, one hundred seventy-two".