121982376185 has 16 divisors (see below), whose sum is σ = 148962257472. Its totient is φ = 95867582400.

The previous prime is 121982376137. The next prime is 121982376203. The reversal of 121982376185 is 581673289121.

It is not a de Polignac number, because 121982376185 - 2¹² = 121982372089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782 + ... + 493928.

It is an arithmetic number, because the mean of its divisors is an integer number (9310141092).

Almost surely, 2^121982376185 is an apocalyptic number.

It is an amenable number.

121982376185 is a deficient number, since it is larger than the sum of its proper divisors (26979881287).

121982376185 is an equidigital number, since it uses as much as digits as its factorization.

121982376185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494024.

The product of its digits is 1451520, while the sum is 53.

The spelling of 121982376185 in words is "one hundred twenty-one billion, nine hundred eighty-two million, three hundred seventy-six thousand, one hundred eighty-five".