1001111100912 has 120 divisors (see below), whose sum is σ = 3066700885248. Its totient is φ = 302984409600.

The previous prime is 1001111100877. The next prime is 1001111100959. The reversal of 1001111100912 is 2190011111001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4269264 + ... + 4497647.

Almost surely, 2^{1001111100912} is an apocalyptic number.

1001111100912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001111100912 is an abundant number, since it is smaller than the sum of its proper divisors (2065589784336).

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

1001111100912 is a wasteful number, since it uses less digits than its factorization.

1001111100912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8766999 (or 8766990 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

Adding to 1001111100912 its reverse (2190011111001), we get a palindrome (3191122211913).

The spelling of 1001111100912 in words is "one trillion, one billion, one hundred eleven million, one hundred thousand, nine hundred twelve".