221022332 has 12 divisors (see below), whose sum is σ = 387032520. Its totient is φ = 110441616.

The previous prime is 221022323. The next prime is 221022353. The reversal of 221022332 is 233220122.

It is a self number, because there is not a number n which added to its sum of digits gives 221022332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9878 + ... + 23229.

It is an arithmetic number, because the mean of its divisors is an integer number (32252710).

Almost surely, 2^221022332 is an apocalyptic number.

It is an amenable number.

221022332 is a deficient number, since it is larger than the sum of its proper divisors (166010188).

221022332 is a wasteful number, since it uses less digits than its factorization.

221022332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34780 (or 34778 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 221022332 is about 14866.8198347865. The cubic root of 221022332 is about 604.6147236231.

Adding to 221022332 its reverse (233220122), we get a palindrome (454242454).

It can be divided in two parts, 2210 and 22332, that added together give a palindrome (24542).

The spelling of 221022332 in words is "two hundred twenty-one million, twenty-two thousand, three hundred thirty-two".