131021222400220 has 12 divisors (see below), whose sum is σ = 275144567040504. Its totient is φ = 52408488960080.

The previous prime is 131021222400181. The next prime is 131021222400283. The reversal of 131021222400220 is 22004222120131.

It is a super-2 number, since 2×131021222400220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131021222400191 and 131021222400200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275530559986 + ... + 3275530560025.

It is an arithmetic number, because the mean of its divisors is an integer number (22928713920042).

Almost surely, 2^{131021222400220} is an apocalyptic number.

131021222400220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131021222400220 is an abundant number, since it is smaller than the sum of its proper divisors (144123344640284).

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

131021222400220 is a wasteful number, since it uses less digits than its factorization.

131021222400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551061120020 (or 6551061120018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 131021222400220 its reverse (22004222120131), we get a palindrome (153025444520351).

The spelling of 131021222400220 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred twenty-two million, four hundred thousand, two hundred twenty".