211261086 has 12 divisors (see below), whose sum is σ = 457732392. Its totient is φ = 70420356.

The previous prime is 211261079. The next prime is 211261189. The reversal of 211261086 is 680162112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5868346 + ... + 5868381.

It is an arithmetic number, because the mean of its divisors is an integer number (38144366).

Almost surely, 2^211261086 is an apocalyptic number.

211261086 is an abundant number, since it is smaller than the sum of its proper divisors (246471306).

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

211261086 is a wasteful number, since it uses less digits than its factorization.

211261086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736735 (or 11736732 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 211261086 is about 14534.8232187392. The cubic root of 211261086 is about 595.5796305308.

The spelling of 211261086 in words is "two hundred eleven million, two hundred sixty-one thousand, eighty-six".