211122890 has 16 divisors (see below), whose sum is σ = 414568800. Its totient is φ = 76771920.

The previous prime is 211122869. The next prime is 211122913. The reversal of 211122890 is 98221112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959540 + ... + 959759.

It is an arithmetic number, because the mean of its divisors is an integer number (25910550).

Almost surely, 2^211122890 is an apocalyptic number.

211122890 is a deficient number, since it is larger than the sum of its proper divisors (203445910).

211122890 is a wasteful number, since it uses less digits than its factorization.

211122890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919317.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 211122890 is about 14530.0684788476. The cubic root of 211122890 is about 595.4497364779.

The spelling of 211122890 in words is "two hundred eleven million, one hundred twenty-two thousand, eight hundred ninety".