1131312121192 has 96 divisors (see below), whose sum is σ = 2348970775200. Its totient is φ = 510407680640.

The previous prime is 1131312121189. The next prime is 1131312121207. The reversal of 1131312121192 is 2911212131311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131312121192.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97546338 + ... + 97557934.

It is an arithmetic number, because the mean of its divisors is an integer number (24468445575).

Almost surely, 2^{1131312121192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131312121192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174485387600).

1131312121192 is an abundant number, since it is smaller than the sum of its proper divisors (1217658654008).

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

1131312121192 is a wasteful number, since it uses less digits than its factorization.

1131312121192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12367 (or 12352 counting only the distinct ones).

The product of its digits is 648, while the sum is 28.

The spelling of 1131312121192 in words is "one trillion, one hundred thirty-one billion, three hundred twelve million, one hundred twenty-one thousand, one hundred ninety-two".