1000991199112 has 32 divisors (see below), whose sum is σ = 1878300864000. Its totient is φ = 500111123904.

The previous prime is 1000991199101. The next prime is 1000991199119. The reversal of 1000991199112 is 2119911990001.

It is not an unprimeable number, because it can be changed into a prime (1000991199119) 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, 79964278 + ... + 79976794.

It is an arithmetic number, because the mean of its divisors is an integer number (58696902000).

Almost surely, 2^{1000991199112} is an apocalyptic number.

It is an amenable number.

1000991199112 is a deficient number, since it is larger than the sum of its proper divisors (877309664888).

1000991199112 is a wasteful number, since it uses less digits than its factorization.

1000991199112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19405 (or 19401 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 43.

The spelling of 1000991199112 in words is "one trillion, nine hundred ninety-one million, one hundred ninety-nine thousand, one hundred twelve".