211166116 has 12 divisors (see below), whose sum is σ = 422332288. Its totient is φ = 90499752.

The previous prime is 211166093. The next prime is 211166143. The reversal of 211166116 is 611661112.

211166116 is an admirable number.

It is a super-2 number, since 2×211166116² = 89182257093050912, 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, 3770796 + ... + 3770851.

Almost surely, 2^211166116 is an apocalyptic number.

It is an amenable number.

211166116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211166116 is a wasteful number, since it uses less digits than its factorization.

211166116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541658 (or 7541656 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 211166116 is about 14531.5558698991. Note that the first 3 decimals coincide. The cubic root of 211166116 is about 595.4903718221.

The spelling of 211166116 in words is "two hundred eleven million, one hundred sixty-six thousand, one hundred sixteen".