2151200021512 has 32 divisors (see below), whose sum is σ = 4272353710200. Its totient is φ = 1011952779264.

The previous prime is 2151200021437. The next prime is 2151200021519.

It is a happy number.

2151200021512 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 1833787222276 + 317412799236 = 1354174^2 + 563394^2 .

It is a super-2 number, since 2×2151200021512² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2151200021519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2575473 + ... + 3306880.

Almost surely, 2^{2151200021512} is an apocalyptic number.

It is an amenable number.

2151200021512 is a deficient number, since it is larger than the sum of its proper divisors (2121153688688).

2151200021512 is a wasteful number, since it uses less digits than its factorization.

2151200021512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885065 (or 5885061 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

It can be divided in two parts, 21512000 and 21512, that added together give a palindrome (21533512).

The spelling of 2151200021512 in words is "two trillion, one hundred fifty-one billion, two hundred million, twenty-one thousand, five hundred twelve".