220221426 has 16 divisors (see below), whose sum is σ = 440663328. Its totient is φ = 73370400.

The previous prime is 220221409. The next prime is 220221431. The reversal of 220221426 is 624122022.

220221426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5641 + ... + 21731.

It is an arithmetic number, because the mean of its divisors is an integer number (27541458).

Almost surely, 2^220221426 is an apocalyptic number.

220221426 is an abundant number, since it is smaller than the sum of its proper divisors (220441902).

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

220221426 is a wasteful number, since it uses less digits than its factorization.

220221426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18377.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 220221426 is about 14839.8593659104. The cubic root of 220221426 is about 603.8835371112.

Adding to 220221426 its reverse (624122022), we get a palindrome (844343448).

The spelling of 220221426 in words is "two hundred twenty million, two hundred twenty-one thousand, four hundred twenty-six".