121557050152 has 32 divisors (see below), whose sum is σ = 233938656000. Its totient is φ = 59186407104.

The previous prime is 121557050143. The next prime is 121557050161. The reversal of 121557050152 is 251050755121.

It is an interprime number because it is at equal distance from previous prime (121557050143) and next prime (121557050161).

It is a super-2 number, since 2×121557050152² (a number of 23 digits) contains 22 as substring.

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, 737463 + ... + 887110.

It is an arithmetic number, because the mean of its divisors is an integer number (7310583000).

Almost surely, 2^121557050152 is an apocalyptic number.

It is an amenable number.

121557050152 is a deficient number, since it is larger than the sum of its proper divisors (112381605848).

121557050152 is a wasteful number, since it uses less digits than its factorization.

121557050152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624825 (or 1624821 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 34.

The spelling of 121557050152 in words is "one hundred twenty-one billion, five hundred fifty-seven million, fifty thousand, one hundred fifty-two".