1131222320112 has 80 divisors (see below), whose sum is σ = 3104880024960. Its totient is φ = 353889490176.

The previous prime is 1131222320077. The next prime is 1131222320113. The reversal of 1131222320112 is 2110232221311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131222320113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5698563 + ... + 5893730.

It is an arithmetic number, because the mean of its divisors is an integer number (38811000312).

Almost surely, 2^{1131222320112} is an apocalyptic number.

1131222320112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131222320112 is an abundant number, since it is smaller than the sum of its proper divisors (1973657704848).

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

1131222320112 is a wasteful number, since it uses less digits than its factorization.

1131222320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11592430 (or 11592424 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1131222320112 its reverse (2110232221311), we get a palindrome (3241454541423).

The spelling of 1131222320112 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, three hundred twenty thousand, one hundred twelve".