2172216264 has 16 divisors (see below), whose sum is σ = 5430540720. Its totient is φ = 724072080.

The previous prime is 2172216223. The next prime is 2172216271. The reversal of 2172216264 is 4626122712.

It is a super-2 number, since 2×2172216264² = 9437046995172235392, which contains 22 as substring.

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, 45254482 + ... + 45254529.

It is an arithmetic number, because the mean of its divisors is an integer number (339408795).

Almost surely, 2^2172216264 is an apocalyptic number.

2172216264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2172216264 is an abundant number, since it is smaller than the sum of its proper divisors (3258324456).

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

2172216264 is a wasteful number, since it uses less digits than its factorization.

2172216264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90509020 (or 90509016 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 2172216264 is about 46607.0409273105. The cubic root of 2172216264 is about 1295.0931918644.

Adding to 2172216264 its reverse (4626122712), we get a palindrome (6798338976).

The spelling of 2172216264 in words is "two billion, one hundred seventy-two million, two hundred sixteen thousand, two hundred sixty-four".