1100021011992 has 240 divisors, whose sum is σ = 3479602975680. Its totient is φ = 313925673600.

The previous prime is 1100021011979. The next prime is 1100021011997. The reversal of 1100021011992 is 2991101200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100021011997) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 171312942 + ... + 171319362.

It is an arithmetic number, because the mean of its divisors is an integer number (14498345732).

Almost surely, 2^{1100021011992} is an apocalyptic number.

1100021011992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100021011992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739801487840).

1100021011992 is an abundant number, since it is smaller than the sum of its proper divisors (2379581963688).

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

1100021011992 is an equidigital number, since it uses as much as digits as its factorization.

1100021011992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452 (or 7424 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 1100021011992 in words is "one trillion, one hundred billion, twenty-one million, eleven thousand, nine hundred ninety-two".