220131121 has 8 divisors (see below), whose sum is σ = 254172800. Its totient is φ = 186738048.

The previous prime is 220131089. The next prime is 220131133. The reversal of 220131121 is 121131022.

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

It is not a de Polignac number, because 220131121 - 2⁵ = 220131089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220131161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161421 + ... + 162778.

It is an arithmetic number, because the mean of its divisors is an integer number (31771600).

Almost surely, 2^220131121 is an apocalyptic number.

It is an amenable number.

220131121 is a deficient number, since it is larger than the sum of its proper divisors (34041679).

220131121 is an equidigital number, since it uses as much as digits as its factorization.

220131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324303.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 220131121 is about 14836.8164037977. The cubic root of 220131121 is about 603.8009820822.

Adding to 220131121 its reverse (121131022), we get a palindrome (341262143).

Subtracting from 220131121 its reverse (121131022), we obtain a palindrome (99000099).

The spelling of 220131121 in words is "two hundred twenty million, one hundred thirty-one thousand, one hundred twenty-one".