3102721118020 has 24 divisors (see below), whose sum is σ = 6740394154200. Its totient is φ = 1198292293632.

The previous prime is 3102721117973. The next prime is 3102721118033. The reversal of 3102721118020 is 208111272013.

It can be written as a sum of positive squares in 4 ways, for example, as 239396875524 + 2863324242496 = 489282^2 + 1692136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3102721118020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674759005 + ... + 2674760164.

It is an arithmetic number, because the mean of its divisors is an integer number (280849756425).

Almost surely, 2^{3102721118020} is an apocalyptic number.

It is an amenable number.

3102721118020 is an abundant number, since it is smaller than the sum of its proper divisors (3637673036180).

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

3102721118020 is a wasteful number, since it uses less digits than its factorization.

3102721118020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349519207 (or 5349519205 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The spelling of 3102721118020 in words is "three trillion, one hundred two billion, seven hundred twenty-one million, one hundred eighteen thousand, twenty".