131201422213221 has 16 divisors (see below), whose sum is σ = 194373536301120. Its totient is φ = 87467138282160.

The previous prime is 131201422213187. The next prime is 131201422213249. The reversal of 131201422213221 is 122312224102131.

131201422213221 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 1 + 422 + 2 + 13 + 221 = 666.

It is not a de Polignac number, because 131201422213221 - 2⁴⁵ = 96017050124389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201422212221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8153670 + ... + 18135191.

It is an arithmetic number, because the mean of its divisors is an integer number (12148346018820).

Almost surely, 2^{131201422213221} is an apocalyptic number.

It is an amenable number.

131201422213221 is a deficient number, since it is larger than the sum of its proper divisors (63172114087899).

131201422213221 is a wasteful number, since it uses less digits than its factorization.

131201422213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26473713 (or 26473707 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131201422213221 its reverse (122312224102131), we get a palindrome (253513646315352).

The spelling of 131201422213221 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty-two million, two hundred thirteen thousand, two hundred twenty-one".