2102155325572 has 12 divisors (see below), whose sum is σ = 3679048325260. Its totient is φ = 1050998661216.

The previous prime is 2102155325561. The next prime is 2102155325597. The reversal of 2102155325572 is 2755235512012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 146118120516 + 1956037205056 = 382254^2 + 1398584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19690503 + ... + 19796974.

Almost surely, 2^{2102155325572} is an apocalyptic number.

It is an amenable number.

2102155325572 is a deficient number, since it is larger than the sum of its proper divisors (1576892999688).

2102155325572 is a wasteful number, since it uses less digits than its factorization.

2102155325572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39500790 (or 39500788 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 2102155325572 in words is "two trillion, one hundred two billion, one hundred fifty-five million, three hundred twenty-five thousand, five hundred seventy-two".