1031322120112 has 20 divisors (see below), whose sum is σ = 2067089595120. Its totient is φ = 497879643968.

The previous prime is 1031322120107. The next prime is 1031322120113. The reversal of 1031322120112 is 2110212231301.

It is a self number, because there is not a number n which added to its sum of digits gives 1031322120112.

It is not an unprimeable number, because it can be changed into a prime (1031322120113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111338028 + ... + 1111338955.

It is an arithmetic number, because the mean of its divisors is an integer number (103354479756).

Almost surely, 2^{1031322120112} is an apocalyptic number.

It is an amenable number.

1031322120112 is an abundant number, since it is smaller than the sum of its proper divisors (1035767475008).

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

1031322120112 is a wasteful number, since it uses less digits than its factorization.

1031322120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222677020 (or 2222677014 counting only the distinct ones).

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

Adding to 1031322120112 its reverse (2110212231301), we get a palindrome (3141534351413).

The spelling of 1031322120112 in words is "one trillion, thirty-one billion, three hundred twenty-two million, one hundred twenty thousand, one hundred twelve".