131202222201220 has 12 divisors (see below), whose sum is σ = 275524666622604. Its totient is φ = 52480888880480.

The previous prime is 131202222201143. The next prime is 131202222201221. The reversal of 131202222201220 is 22102222202131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93662754914304 + 37539467286916 = 9677952^2 + 6126946^2 .

It is a super-2 number, since 2×131202222201220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131202222201191 and 131202222201200.

It is not an unprimeable number, because it can be changed into a prime (131202222201221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280055555011 + ... + 3280055555050.

It is an arithmetic number, because the mean of its divisors is an integer number (22960388885217).

Almost surely, 2^{131202222201220} is an apocalyptic number.

131202222201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202222201220 is an abundant number, since it is smaller than the sum of its proper divisors (144322444421384).

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

131202222201220 is a wasteful number, since it uses less digits than its factorization.

131202222201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560111110070 (or 6560111110068 counting only the distinct ones).

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

Adding to 131202222201220 its reverse (22102222202131), we get a palindrome (153304444403351).

The spelling of 131202222201220 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred twenty-two million, two hundred one thousand, two hundred twenty".