220221132 has 24 divisors (see below), whose sum is σ = 524783616. Its totient is φ = 71845008.

The previous prime is 220221101. The next prime is 220221143. The reversal of 220221132 is 231122022.

It is a happy number.

It is a super-2 number, since 2×220221132² = 96994693958722848, which contains 22 as substring.

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, 194668 + ... + 195795.

It is an arithmetic number, because the mean of its divisors is an integer number (21865984).

Almost surely, 2^220221132 is an apocalyptic number.

It is an amenable number.

220221132 is an abundant number, since it is smaller than the sum of its proper divisors (304562484).

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

220221132 is a wasteful number, since it uses less digits than its factorization.

220221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390517 (or 390515 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 220221132 is about 14839.8494601529. The cubic root of 220221132 is about 603.8832683789.

Adding to 220221132 its reverse (231122022), we get a palindrome (451343154).

The spelling of 220221132 in words is "two hundred twenty million, two hundred twenty-one thousand, one hundred thirty-two".