221072110 has 32 divisors (see below), whose sum is σ = 455357952. Its totient is φ = 75699360.

The previous prime is 221072107. The next prime is 221072119. The reversal of 221072110 is 11270122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221072119) 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, 72925 + ... + 75895.

It is an arithmetic number, because the mean of its divisors is an integer number (14229936).

Almost surely, 2^221072110 is an apocalyptic number.

221072110 is an abundant number, since it is smaller than the sum of its proper divisors (234285842).

221072110 is a wasteful number, since it uses less digits than its factorization.

221072110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 221072110 is about 14868.4938712702. The cubic root of 221072110 is about 604.6601100663.

The spelling of 221072110 in words is "two hundred twenty-one million, seventy-two thousand, one hundred ten".