2172066312 has 32 divisors (see below), whose sum is σ = 5847871680. Its totient is φ = 668328000.

The previous prime is 2172066311. The next prime is 2172066313. The reversal of 2172066312 is 2136602712.

It is an interprime number because it is at equal distance from previous prime (2172066311) and next prime (2172066313).

It is a self number, because there is not a number n which added to its sum of digits gives 2172066312.

It is not an unprimeable number, because it can be changed into a prime (2172066311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480564 + ... + 3481187.

It is an arithmetic number, because the mean of its divisors is an integer number (182745990).

Almost surely, 2^2172066312 is an apocalyptic number.

It is an amenable number.

2172066312 is an abundant number, since it is smaller than the sum of its proper divisors (3675805368).

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

2172066312 is a wasteful number, since it uses less digits than its factorization.

2172066312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6961773 (or 6961769 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 2172066312 is about 46605.4322155690. The cubic root of 2172066312 is about 1295.0633903069.

The spelling of 2172066312 in words is "two billion, one hundred seventy-two million, sixty-six thousand, three hundred twelve".