131121112224 has 24 divisors (see below), whose sum is σ = 344192919840. Its totient is φ = 43707037376.

The previous prime is 131121112219. The next prime is 131121112261. The reversal of 131121112224 is 422211121131.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 131121112224.

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, 682922364 + ... + 682922555.

It is an arithmetic number, because the mean of its divisors is an integer number (14341371660).

Almost surely, 2^131121112224 is an apocalyptic number.

It is an amenable number.

131121112224 is an abundant number, since it is smaller than the sum of its proper divisors (213071807616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131121112224 is a wasteful number, since it uses less digits than its factorization.

131121112224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365844932 (or 1365844924 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

Adding to 131121112224 its reverse (422211121131), we get a palindrome (553332233355).

The spelling of 131121112224 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-four".