221023092 has 12 divisors (see below), whose sum is σ = 515720576. Its totient is φ = 73674360.

The previous prime is 221023039. The next prime is 221023097. The reversal of 221023092 is 290320122.

221023092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221023097) 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, 9209284 + ... + 9209307.

Almost surely, 2^221023092 is an apocalyptic number.

It is an amenable number.

221023092 is an abundant number, since it is smaller than the sum of its proper divisors (294697484).

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

221023092 is a wasteful number, since it uses less digits than its factorization.

221023092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18418598 (or 18418596 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 221023092 is about 14866.8453950393. The cubic root of 221023092 is about 604.6154166250.

The spelling of 221023092 in words is "two hundred twenty-one million, twenty-three thousand, ninety-two".