211222092 has 12 divisors (see below), whose sum is σ = 492851576. Its totient is φ = 70407360.

The previous prime is 211222091. The next prime is 211222097. The reversal of 211222092 is 290222112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×211222092² = 89229544297712928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800909 + ... + 8800932.

Almost surely, 2^211222092 is an apocalyptic number.

It is an amenable number.

211222092 is an abundant number, since it is smaller than the sum of its proper divisors (281629484).

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

211222092 is a wasteful number, since it uses less digits than its factorization.

211222092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601848 (or 17601846 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 211222092 is about 14533.4817576519. The cubic root of 211222092 is about 595.5429847835.

The spelling of 211222092 in words is "two hundred eleven million, two hundred twenty-two thousand, ninety-two".