102131121982 has 16 divisors (see below), whose sum is σ = 158591664000. Its totient is φ = 49276674720.

The previous prime is 102131121977. The next prime is 102131121991. The reversal of 102131121982 is 289121131201.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 2338357 + ... + 2381632.

It is an arithmetic number, because the mean of its divisors is an integer number (9911979000).

Almost surely, 2^102131121982 is an apocalyptic number.

102131121982 is a deficient number, since it is larger than the sum of its proper divisors (56460542018).

102131121982 is a wasteful number, since it uses less digits than its factorization.

102131121982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720371.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 102131121982 in words is "one hundred two billion, one hundred thirty-one million, one hundred twenty-one thousand, nine hundred eighty-two".