1131203211312 has 40 divisors (see below), whose sum is σ = 2922326959104. Its totient is φ = 377061027904.

The previous prime is 1131203211311. The next prime is 1131203211343. The reversal of 1131203211312 is 2131123021311.

It is a super-2 number, since 2×1131203211312² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131203211311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3033193 + ... + 3385655.

Almost surely, 2^{1131203211312} is an apocalyptic number.

1131203211312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131203211312 is an abundant number, since it is smaller than the sum of its proper divisors (1791123747792).

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

1131203211312 is a wasteful number, since it uses less digits than its factorization.

1131203211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419337 (or 419331 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1131203211312 its reverse (2131123021311), we get a palindrome (3262326232623).

The spelling of 1131203211312 in words is "one trillion, one hundred thirty-one billion, two hundred three million, two hundred eleven thousand, three hundred twelve".