1109913221220 has 24 divisors (see below), whose sum is σ = 3107757019584. Its totient is φ = 295976858976.

The previous prime is 1109913221203. The next prime is 1109913221233. The reversal of 1109913221220 is 221223199011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9249276784 + ... + 9249276903.

It is an arithmetic number, because the mean of its divisors is an integer number (129489875816).

Almost surely, 2^{1109913221220} is an apocalyptic number.

1109913221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109913221220 is an abundant number, since it is smaller than the sum of its proper divisors (1997843798364).

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

1109913221220 is a wasteful number, since it uses less digits than its factorization.

1109913221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498553699 (or 18498553697 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The spelling of 1109913221220 in words is "one trillion, one hundred nine billion, nine hundred thirteen million, two hundred twenty-one thousand, two hundred twenty".