20122131130220 has 24 divisors (see below), whose sum is σ = 48293114712864. Its totient is φ = 6899016387456.

The previous prime is 20122131130217. The next prime is 20122131130237. The reversal of 20122131130220 is 2203113122102.

It is a super-2 number, since 2×20122131130220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20122131130192 and 20122131130201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71864753897 + ... + 71864754176.

It is an arithmetic number, because the mean of its divisors is an integer number (2012213113036).

Almost surely, 2^{20122131130220} is an apocalyptic number.

20122131130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122131130220 is an abundant number, since it is smaller than the sum of its proper divisors (28170983582644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122131130220 is a wasteful number, since it uses less digits than its factorization.

20122131130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143729508089 (or 143729508087 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20122131130220 its reverse (2203113122102), we get a palindrome (22325244252322).

The spelling of 20122131130220 in words is "twenty trillion, one hundred twenty-two billion, one hundred thirty-one million, one hundred thirty thousand, two hundred twenty".