2172565122 has 64 divisors (see below), whose sum is σ = 5353340160. Its totient is φ = 572396544.

The previous prime is 2172565121. The next prime is 2172565123. The reversal of 2172565122 is 2215652712.

It is an interprime number because it is at equal distance from previous prime (2172565121) and next prime (2172565123).

It is not an unprimeable number, because it can be changed into a prime (2172565121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 877278 + ... + 879750.

It is an arithmetic number, because the mean of its divisors is an integer number (83645940).

Almost surely, 2^2172565122 is an apocalyptic number.

2172565122 is an abundant number, since it is smaller than the sum of its proper divisors (3180775038).

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

2172565122 is a wasteful number, since it uses less digits than its factorization.

2172565122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107.

The product of its digits is 16800, while the sum is 33.

The square root of 2172565122 is about 46610.7833231753. The cubic root of 2172565122 is about 1295.1625188223.

The spelling of 2172565122 in words is "two billion, one hundred seventy-two million, five hundred sixty-five thousand, one hundred twenty-two".