1109014021 has 24 divisors (see below), whose sum is σ = 1205691264. Its totient is φ = 1019433600.

The previous prime is 1109014013. The next prime is 1109014031. The reversal of 1109014021 is 1204109011.

It is not a de Polignac number, because 1109014021 - 2³ = 1109014013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1109014021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109014001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2765421 + ... + 2765821.

It is an arithmetic number, because the mean of its divisors is an integer number (50237136).

Almost surely, 2^1109014021 is an apocalyptic number.

It is an amenable number.

1109014021 is a deficient number, since it is larger than the sum of its proper divisors (96677243).

1109014021 is a wasteful number, since it uses less digits than its factorization.

1109014021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1109014021 is about 33301.8621251125. The cubic root of 1109014021 is about 1035.0921436164.

The spelling of 1109014021 in words is "one billion, one hundred nine million, fourteen thousand, twenty-one".