220331121 has 8 divisors (see below), whose sum is σ = 293850720. Its totient is φ = 146849472.

The previous prime is 220331113. The next prime is 220331141. The reversal of 220331121 is 121133022.

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

It is not a de Polignac number, because 220331121 - 2³ = 220331113 is a prime.

It is a super-2 number, since 2×220331121² = 97091605762233282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220331121.

It is not an unprimeable number, because it can be changed into a prime (220331141) 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, 9481 + ... + 23033.

It is an arithmetic number, because the mean of its divisors is an integer number (36731340).

Almost surely, 2^220331121 is an apocalyptic number.

It is an amenable number.

220331121 is a deficient number, since it is larger than the sum of its proper divisors (73519599).

220331121 is a wasteful number, since it uses less digits than its factorization.

220331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18975.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220331121 is about 14843.5548639805. The cubic root of 220331121 is about 603.9837877393.

Adding to 220331121 its reverse (121133022), we get a palindrome (341464143).

The spelling of 220331121 in words is "two hundred twenty million, three hundred thirty-one thousand, one hundred twenty-one".