121986521160 has 96 divisors (see below), whose sum is σ = 425708084160. Its totient is φ = 27882632064.

The previous prime is 121986521119. The next prime is 121986521179. The reversal of 121986521160 is 61125689121.

It is a super-2 number, since 2×121986521160² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10367124 + ... + 10378883.

It is an arithmetic number, because the mean of its divisors is an integer number (4434459210).

Almost surely, 2^121986521160 is an apocalyptic number.

121986521160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121986521160 is an abundant number, since it is smaller than the sum of its proper divisors (303721563000).

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

121986521160 is a wasteful number, since it uses less digits than its factorization.

121986521160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20746035 (or 20746024 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 121986521160 in words is "one hundred twenty-one billion, nine hundred eighty-six million, five hundred twenty-one thousand, one hundred sixty".