1011112001992 has 8 divisors (see below), whose sum is σ = 1895835003750. Its totient is φ = 505556000992.

The previous prime is 1011112001953. The next prime is 1011112002011. The reversal of 1011112001992 is 2991002111101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 742068536356 + 269043465636 = 861434^2 + 518694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1011112001992.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63194500117 + ... + 63194500132.

Almost surely, 2^{1011112001992} is an apocalyptic number.

It is an amenable number.

1011112001992 is a deficient number, since it is larger than the sum of its proper divisors (884723001758).

1011112001992 is a wasteful number, since it uses less digits than its factorization.

1011112001992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126389000255 (or 126389000251 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 1011112001992 in words is "one trillion, eleven billion, one hundred twelve million, one thousand, nine hundred ninety-two".