131222132223220 has 12 divisors (see below), whose sum is σ = 275566477668804. Its totient is φ = 52488852889280.

The previous prime is 131222132223211. The next prime is 131222132223239. The reversal of 131222132223220 is 22322231222131.

It can be written as a sum of positive squares in 2 ways, for example, as 104461727305104 + 26760404918116 = 10220652^2 + 5173046^2 .

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, 3280553305561 + ... + 3280553305600.

It is an arithmetic number, because the mean of its divisors is an integer number (22963873139067).

Almost surely, 2^{131222132223220} is an apocalyptic number.

131222132223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131222132223220 is an abundant number, since it is smaller than the sum of its proper divisors (144344345445584).

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

131222132223220 is a wasteful number, since it uses less digits than its factorization.

131222132223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561106611170 (or 6561106611168 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 131222132223220 its reverse (22322231222131), we get a palindrome (153544363445351).

The spelling of 131222132223220 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, one hundred thirty-two million, two hundred twenty-three thousand, two hundred twenty".