221052910 has 32 divisors (see below), whose sum is σ = 429160032. Its totient is φ = 81494400.

The previous prime is 221052901. The next prime is 221052913. The reversal of 221052910 is 19250122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221052913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168477 + ... + 169783.

It is an arithmetic number, because the mean of its divisors is an integer number (13411251).

Almost surely, 2^221052910 is an apocalyptic number.

221052910 is a deficient number, since it is larger than the sum of its proper divisors (208107122).

221052910 is a wasteful number, since it uses less digits than its factorization.

221052910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 221052910 is about 14867.8481966961. The cubic root of 221052910 is about 604.6426047522.

The spelling of 221052910 in words is "two hundred twenty-one million, fifty-two thousand, nine hundred ten".