2216667172 has 6 divisors (see below), whose sum is σ = 3879167558. Its totient is φ = 1108333584.

The previous prime is 2216667133. The next prime is 2216667191. The reversal of 2216667172 is 2717666122.

It can be written as a sum of positive squares in only one way, i.e., 1297728576 + 918938596 = 36024^2 + 30314^2 .

It is a super-2 number, since 2×2216667172² = 9827226702844955168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277083393 + ... + 277083400.

Almost surely, 2^2216667172 is an apocalyptic number.

It is an amenable number.

2216667172 is a deficient number, since it is larger than the sum of its proper divisors (1662500386).

2216667172 is a wasteful number, since it uses less digits than its factorization.

2216667172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554166797 (or 554166795 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 2216667172 is about 47081.4950060000. The cubic root of 2216667172 is about 1303.8676087567.

The spelling of 2216667172 in words is "two billion, two hundred sixteen million, six hundred sixty-seven thousand, one hundred seventy-two".