220021332 has 24 divisors (see below), whose sum is σ = 520615872. Its totient is φ = 72307200.

The previous prime is 220021313. The next prime is 220021337. The reversal of 220021332 is 233120022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220021337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128269 + ... + 129972.

It is an arithmetic number, because the mean of its divisors is an integer number (21692328).

Almost surely, 2^220021332 is an apocalyptic number.

It is an amenable number.

220021332 is an abundant number, since it is smaller than the sum of its proper divisors (300594540).

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

220021332 is a wasteful number, since it uses less digits than its factorization.

220021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258319 (or 258317 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220021332 is about 14833.1160583338. The cubic root of 220021332 is about 603.7005847532.

Adding to 220021332 its reverse (233120022), we get a palindrome (453141354).

It can be divided in two parts, 2200 and 21332, that added together give a palindrome (23532).

The spelling of 220021332 in words is "two hundred twenty million, twenty-one thousand, three hundred thirty-two".