131342213132221 has 24 divisors (see below), whose sum is σ = 168551733208824. Its totient is φ = 101384501137920.

The previous prime is 131342213132209. The next prime is 131342213132239. The reversal of 131342213132221 is 122231312243131.

It can be written as a sum of positive squares in 4 ways, for example, as 1791970436025 + 129550242696196 = 1338645^2 + 11382014^2 .

It is not a de Polignac number, because 131342213132221 - 2⁷ = 131342213132093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131342213136221) 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, 2514470440 + ... + 2514522673.

It is an arithmetic number, because the mean of its divisors is an integer number (7022988883701).

Almost surely, 2^{131342213132221} is an apocalyptic number.

It is an amenable number.

131342213132221 is a deficient number, since it is larger than the sum of its proper divisors (37209520076603).

131342213132221 is a wasteful number, since it uses less digits than its factorization.

131342213132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028993181 (or 5028993174 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

Adding to 131342213132221 its reverse (122231312243131), we get a palindrome (253573525375352).

The spelling of 131342213132221 in words is "one hundred thirty-one trillion, three hundred forty-two billion, two hundred thirteen million, one hundred thirty-two thousand, two hundred twenty-one".