221422190 has 32 divisors (see below), whose sum is σ = 439036416. Its totient is φ = 79731360.

The previous prime is 221422177. The next prime is 221422193. The reversal of 221422190 is 91224122.

221422190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221422190² = 98055572448792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422193) 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, 1559 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (13719888).

Almost surely, 2^221422190 is an apocalyptic number.

221422190 is a deficient number, since it is larger than the sum of its proper divisors (217614226).

221422190 is a wasteful number, since it uses less digits than its factorization.

221422190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19664.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 221422190 is about 14880.2617584504. The cubic root of 221422190 is about 604.9791127274.

The spelling of 221422190 in words is "two hundred twenty-one million, four hundred twenty-two thousand, one hundred ninety".