1131205203112 has 32 divisors (see below), whose sum is σ = 2282591036520. Its totient is φ = 523605104640.

The previous prime is 1131205203097. The next prime is 1131205203119. The reversal of 1131205203112 is 2113025021311.

It can be written as a sum of positive squares in 4 ways, for example, as 501839060836 + 629366142276 = 708406^2 + 793326^2 .

It is a super-2 number, since 2×1131205203112² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131205203119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68169453 + ... + 68186044.

Almost surely, 2^{1131205203112} is an apocalyptic number.

It is an amenable number.

1131205203112 is an abundant number, since it is smaller than the sum of its proper divisors (1151385833408).

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

1131205203112 is a wasteful number, since it uses less digits than its factorization.

1131205203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136355581 (or 136355577 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 1131205203112 in words is "one trillion, one hundred thirty-one billion, two hundred five million, two hundred three thousand, one hundred twelve".