121477591992 has 16 divisors (see below), whose sum is σ = 303693980040. Its totient is φ = 40492530656.

The previous prime is 121477591931. The next prime is 121477592003. The reversal of 121477591992 is 299195774121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530783143 + ... + 2530783190.

Almost surely, 2^121477591992 is an apocalyptic number.

121477591992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121477591992 is an abundant number, since it is smaller than the sum of its proper divisors (182216388048).

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

121477591992 is a wasteful number, since it uses less digits than its factorization.

121477591992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061566342 (or 5061566338 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 57.

The spelling of 121477591992 in words is "one hundred twenty-one billion, four hundred seventy-seven million, five hundred ninety-one thousand, nine hundred ninety-two".