216112442 has 24 divisors (see below), whose sum is σ = 406103796. Its totient is φ = 85494528.

The previous prime is 216112423. The next prime is 216112469. The reversal of 216112442 is 244211612.

It can be written as a sum of positive squares in 2 ways, for example, as 184987201 + 31125241 = 13601^2 + 5579^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83543 + ... + 86090.

Almost surely, 2^216112442 is an apocalyptic number.

216112442 is a deficient number, since it is larger than the sum of its proper divisors (189991354).

216112442 is a wasteful number, since it uses less digits than its factorization.

216112442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169662 (or 169655 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 216112442 is about 14700.7633135154. The cubic root of 216112442 is about 600.1040949023.

The spelling of 216112442 in words is "two hundred sixteen million, one hundred twelve thousand, four hundred forty-two".