220122321 has 16 divisors (see below), whose sum is σ = 296655744. Its totient is φ = 145177344.

The previous prime is 220122311. The next prime is 220122337. The reversal of 220122321 is 123221022.

It is a happy number.

It is not a de Polignac number, because 220122321 - 2⁶ = 220122257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220122321.

It is not an unprimeable number, because it can be changed into a prime (220122311) 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, 122985 + ... + 124761.

It is an arithmetic number, because the mean of its divisors is an integer number (18540984).

Almost surely, 2^220122321 is an apocalyptic number.

It is an amenable number.

220122321 is a deficient number, since it is larger than the sum of its proper divisors (76533423).

220122321 is a wasteful number, since it uses less digits than its factorization.

220122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

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

The square root of 220122321 is about 14836.5198412566. The cubic root of 220122321 is about 603.7929360907.

Adding to 220122321 its reverse (123221022), we get a palindrome (343343343).

The spelling of 220122321 in words is "two hundred twenty million, one hundred twenty-two thousand, three hundred twenty-one".