1099255266912 has 96 divisors (see below), whose sum is σ = 3173883156864. Its totient is φ = 333107617920.

The previous prime is 1099255266887. The next prime is 1099255266917. The reversal of 1099255266912 is 2196625529901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099255266917) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4173718 + ... + 4429269.

It is an arithmetic number, because the mean of its divisors is an integer number (33061282884).

Almost surely, 2^{1099255266912} is an apocalyptic number.

1099255266912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1099255266912 is an abundant number, since it is smaller than the sum of its proper divisors (2074627889952).

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

1099255266912 is an equidigital number, since it uses as much as digits as its factorization.

1099255266912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603033 (or 8603003 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 57.

The spelling of 1099255266912 in words is "one trillion, ninety-nine billion, two hundred fifty-five million, two hundred sixty-six thousand, nine hundred twelve".