121232312131 has 12 divisors (see below), whose sum is σ = 141693721320. Its totient is φ = 103420920960.

The previous prime is 121232312119. The next prime is 121232312189. The reversal of 121232312131 is 131213232121.

It is not a de Polignac number, because 121232312131 - 2¹⁹ = 121231787843 is a prime.

It is a super-2 number, since 2×121232312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121232313131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5852526 + ... + 5873203.

It is an arithmetic number, because the mean of its divisors is an integer number (11807810110).

Almost surely, 2^121232312131 is an apocalyptic number.

121232312131 is a deficient number, since it is larger than the sum of its proper divisors (20461409189).

121232312131 is a wasteful number, since it uses less digits than its factorization.

121232312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11725954 (or 11725947 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121232312131 its reverse (131213232121), we get a palindrome (252445544252).

The spelling of 121232312131 in words is "one hundred twenty-one billion, two hundred thirty-two million, three hundred twelve thousand, one hundred thirty-one".