131221331114121 has 16 divisors (see below), whose sum is σ = 195800547364800. Its totient is φ = 86851528504704.

The previous prime is 131221331114119. The next prime is 131221331114123. The reversal of 131221331114121 is 121411133122131.

131221331114121 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 2 + 133 + 111 + 412 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (131221331114119) and next prime (131221331114123).

It is not a de Polignac number, because 131221331114121 - 2¹ = 131221331114119 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (131221331114123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17482187976 + ... + 17482195481.

It is an arithmetic number, because the mean of its divisors is an integer number (12237534210300).

Almost surely, 2^{131221331114121} is an apocalyptic number.

It is an amenable number.

131221331114121 is a deficient number, since it is larger than the sum of its proper divisors (64579216250679).

131221331114121 is a wasteful number, since it uses less digits than its factorization.

131221331114121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34964383605 (or 34964383599 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

Adding to 131221331114121 its reverse (121411133122131), we get a palindrome (252632464236252).

The spelling of 131221331114121 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty-one million, one hundred fourteen thousand, one hundred twenty-one".