2151122560 has 64 divisors (see below), whose sum is σ = 5319901800. Its totient is φ = 830771200.

The previous prime is 2151122551. The next prime is 2151122593. The reversal of 2151122560 is 652211512.

It can be written as a sum of positive squares in 4 ways, for example, as 1043031616 + 1108090944 = 32296^2 + 33288^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39391 + ... + 76510.

Almost surely, 2^2151122560 is an apocalyptic number.

2151122560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151122560 is an abundant number, since it is smaller than the sum of its proper divisors (3168779240).

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

2151122560 is a wasteful number, since it uses less digits than its factorization.

2151122560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115949 (or 115937 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2151122560 is about 46380.1957736273. The cubic root of 2151122560 is about 1290.8874689591.

The spelling of 2151122560 in words is "two billion, one hundred fifty-one million, one hundred twenty-two thousand, five hundred sixty".