131211122132 has 12 divisors (see below), whose sum is σ = 229624134516. Its totient is φ = 65604226560.

The previous prime is 131211122113. The next prime is 131211122143. The reversal of 131211122132 is 231221112131.

It can be written as a sum of positive squares in 2 ways, for example, as 82583815876 + 48627306256 = 287374^2 + 220516^2 .

It is a super-2 number, since 2×131211122132² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93143 + ... + 520670.

It is an arithmetic number, because the mean of its divisors is an integer number (19135344543).

Almost surely, 2^131211122132 is an apocalyptic number.

It is an amenable number.

131211122132 is a deficient number, since it is larger than the sum of its proper divisors (98413012384).

131211122132 is a wasteful number, since it uses less digits than its factorization.

131211122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667258 (or 667256 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 131211122132 its reverse (231221112131), we get a palindrome (362432234263).

The spelling of 131211122132 in words is "one hundred thirty-one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred thirty-two".