131211122111211 has 16 divisors (see below), whose sum is σ = 184479609340800. Its totient is φ = 82724540568768.

The previous prime is 131211122111177. The next prime is 131211122111213. The reversal of 131211122111211 is 112111221112131.

It is not a de Polignac number, because 131211122111211 - 2²⁶ = 131211055002347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131211122111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2022770301 + ... + 2022835166.

It is an arithmetic number, because the mean of its divisors is an integer number (11529975583800).

Almost surely, 2^{131211122111211} is an apocalyptic number.

131211122111211 is a deficient number, since it is larger than the sum of its proper divisors (53268487229589).

131211122111211 is a wasteful number, since it uses less digits than its factorization.

131211122111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045606058.

The product of its digits is 48, while the sum is 21.

Adding to 131211122111211 its reverse (112111221112131), we get a palindrome (243322343223342).

The spelling of 131211122111211 in words is "one hundred thirty-one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".