2101961572 has 12 divisors (see below), whose sum is σ = 3797092096. Its totient is φ = 1017078120.

The previous prime is 2101961567. The next prime is 2101961627. The reversal of 2101961572 is 2751691012.

It is a super-2 number, since 2×2101961572² = 8836484900329422368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 8475528 + ... + 8475775.

Almost surely, 2^2101961572 is an apocalyptic number.

It is an amenable number.

2101961572 is a deficient number, since it is larger than the sum of its proper divisors (1695130524).

2101961572 is a wasteful number, since it uses less digits than its factorization.

2101961572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16951338 (or 16951336 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 2101961572 is about 45847.1544591374. The cubic root of 2101961572 is about 1280.9777628474.

The spelling of 2101961572 in words is "two billion, one hundred one million, nine hundred sixty-one thousand, five hundred seventy-two".