2100056555012 has 36 divisors (see below), whose sum is σ = 3984975100260. Its totient is φ = 967934328192.

The previous prime is 2100056554961. The next prime is 2100056555021. The reversal of 2100056555012 is 2105556500012.

It can be written as a sum of positive squares in 6 ways, for example, as 249624141376 + 1850432413636 = 499624^2 + 1360306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2100056555012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1623587 + ... + 2614602.

It is an arithmetic number, because the mean of its divisors is an integer number (110693752785).

Almost surely, 2^{2100056555012} is an apocalyptic number.

It is an amenable number.

2100056555012 is a deficient number, since it is larger than the sum of its proper divisors (1884918545248).

2100056555012 is a wasteful number, since it uses less digits than its factorization.

2100056555012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238952 (or 4238937 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 2100056555012 in words is "two trillion, one hundred billion, fifty-six million, five hundred fifty-five thousand, twelve".