131121322012 has 48 divisors (see below), whose sum is σ = 244589974272. Its totient is φ = 61375255040.

The previous prime is 131121321983. The next prime is 131121322021. The reversal of 131121322012 is 210223121131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 736812 + ... + 897292.

It is an arithmetic number, because the mean of its divisors is an integer number (5095624464).

Almost surely, 2^131121322012 is an apocalyptic number.

It is an amenable number.

131121322012 is a deficient number, since it is larger than the sum of its proper divisors (113468652260).

131121322012 is a wasteful number, since it uses less digits than its factorization.

131121322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160698 (or 160696 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131121322012 its reverse (210223121131), we get a palindrome (341344443143).

The spelling of 131121322012 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-two thousand, twelve".