220122121 has 8 divisors (see below), whose sum is σ = 231802560. Its totient is φ = 208617552.

The previous prime is 220122101. The next prime is 220122131. The reversal of 220122121 is 121221022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220122121 - 2²⁷ = 85904393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220122101) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41395 + ... + 46408.

It is an arithmetic number, because the mean of its divisors is an integer number (28975320).

Almost surely, 2^220122121 is an apocalyptic number.

It is an amenable number.

220122121 is a deficient number, since it is larger than the sum of its proper divisors (11680439).

220122121 is a wasteful number, since it uses less digits than its factorization.

220122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87935.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 220122121 is about 14836.5131011299. The cubic root of 220122121 is about 603.7927532247.

Adding to 220122121 its reverse (121221022), we get a palindrome (341343143).

The spelling of 220122121 in words is "two hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".