12220020031 has 24 divisors (see below), whose sum is σ = 13093348464. Its totient is φ = 11401568640.

The previous prime is 12220020023. The next prime is 12220020041. The reversal of 12220020031 is 13002002221.

It is not a de Polignac number, because 12220020031 - 2³ = 12220020023 is a prime.

It is a super-2 number, since 2×12220020031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220019993 and 12220020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220020011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18486841 + ... + 18487501.

It is an arithmetic number, because the mean of its divisors is an integer number (545556186).

Almost surely, 2^12220020031 is an apocalyptic number.

12220020031 is a deficient number, since it is larger than the sum of its proper divisors (873328433).

12220020031 is an equidigital number, since it uses as much as digits as its factorization.

12220020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12220020031 its reverse (13002002221), we get a palindrome (25222022252).

The spelling of 12220020031 in words is "twelve billion, two hundred twenty million, twenty thousand, thirty-one".