131221211320022 has 16 divisors (see below), whose sum is σ = 200906576640000. Its totient is φ = 64260559408680.

The previous prime is 131221211320007. The next prime is 131221211320049. The reversal of 131221211320022 is 220023112122131.

It is a self number, because there is not a number n which added to its sum of digits gives 131221211320022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2051710022 + ... + 2051773977.

It is an arithmetic number, because the mean of its divisors is an integer number (12556661040000).

Almost surely, 2^{131221211320022} is an apocalyptic number.

131221211320022 is a deficient number, since it is larger than the sum of its proper divisors (69685365319978).

131221211320022 is a wasteful number, since it uses less digits than its factorization.

131221211320022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103484331.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131221211320022 its reverse (220023112122131), we get a palindrome (351244323442153).

The spelling of 131221211320022 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, two hundred eleven million, three hundred twenty thousand, twenty-two".