121591827320 has 32 divisors (see below), whose sum is σ = 274043016720. Its totient is φ = 48554703360.

The previous prime is 121591827317. The next prime is 121591827377. The reversal of 121591827320 is 23728195121.

It is a congruent number.

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, 2539346 + ... + 2586785.

Almost surely, 2^121591827320 is an apocalyptic number.

121591827320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121591827320 is an abundant number, since it is smaller than the sum of its proper divisors (152451189400).

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

121591827320 is a wasteful number, since it uses less digits than its factorization.

121591827320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126735 (or 5126731 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 121591827320 in words is "one hundred twenty-one billion, five hundred ninety-one million, eight hundred twenty-seven thousand, three hundred twenty".