20220131231121 has 16 divisors (see below), whose sum is σ = 26974024182848. Its totient is φ = 13473163468800.

The previous prime is 20220131231093. The next prime is 20220131231137. The reversal of 20220131231121 is 12113213102202.

It is not a de Polignac number, because 20220131231121 - 2⁶ = 20220131231057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220131238121) 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, 172275426 + ... + 172392756.

It is an arithmetic number, because the mean of its divisors is an integer number (1685876511428).

Almost surely, 2^{20220131231121} is an apocalyptic number.

It is an amenable number.

20220131231121 is a deficient number, since it is larger than the sum of its proper divisors (6753892951727).

20220131231121 is a wasteful number, since it uses less digits than its factorization.

20220131231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146352.

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

Adding to 20220131231121 its reverse (12113213102202), we get a palindrome (32333344333323).

The spelling of 20220131231121 in words is "twenty trillion, two hundred twenty billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty-one".