131221302110213 has 64 divisors (see below), whose sum is σ = 155695866273792. Its totient is φ = 108282776659200.

The previous prime is 131221302110149. The next prime is 131221302110219. The reversal of 131221302110213 is 312011203122131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131221302110213 - 2⁶ = 131221302110149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221302110219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2290726070 + ... + 2290783352.

It is an arithmetic number, because the mean of its divisors is an integer number (2432747910528).

Almost surely, 2^{131221302110213} is an apocalyptic number.

It is an amenable number.

131221302110213 is a deficient number, since it is larger than the sum of its proper divisors (24474564163579).

131221302110213 is a wasteful number, since it uses less digits than its factorization.

131221302110213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57994.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131221302110213 its reverse (312011203122131), we get a palindrome (443232505232344).

The spelling of 131221302110213 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred two million, one hundred ten thousand, two hundred thirteen".