211568012 has 12 divisors (see below), whose sum is σ = 372000216. Its totient is φ = 105282240.

The previous prime is 211567999. The next prime is 211568023. The reversal of 211568012 is 210865112.

It is a super-2 number, since 2×211568012² = 89522047403264288, 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, 124493 + ... + 126180.

It is an arithmetic number, because the mean of its divisors is an integer number (31000018).

Almost surely, 2^211568012 is an apocalyptic number.

It is an amenable number.

211568012 is a deficient number, since it is larger than the sum of its proper divisors (160432204).

211568012 is a wasteful number, since it uses less digits than its factorization.

211568012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250888 (or 250886 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 211568012 is about 14545.3776850242. The cubic root of 211568012 is about 595.8679158676.

The spelling of 211568012 in words is "two hundred eleven million, five hundred sixty-eight thousand, twelve".