220031221310121 has 96 divisors (see below), whose sum is σ = 327556408177152. Its totient is φ = 131242394949120.

The previous prime is 220031221310113. The next prime is 220031221310123. The reversal of 220031221310121 is 121013122130022.

It is not a de Polignac number, because 220031221310121 - 2³ = 220031221310113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220031221310123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9447037486 + ... + 9447060776.

It is an arithmetic number, because the mean of its divisors is an integer number (3412045918512).

Almost surely, 2^{220031221310121} is an apocalyptic number.

It is an amenable number.

220031221310121 is a deficient number, since it is larger than the sum of its proper divisors (107525186867031).

220031221310121 is a wasteful number, since it uses less digits than its factorization.

220031221310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26663 (or 26650 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 220031221310121 its reverse (121013122130022), we get a palindrome (341044343440143).

The spelling of 220031221310121 in words is "two hundred twenty trillion, thirty-one billion, two hundred twenty-one million, three hundred ten thousand, one hundred twenty-one".