1109901099021 has 32 divisors (see below), whose sum is σ = 1748299230720. Its totient is φ = 617454801600.

The previous prime is 1109901099019. The next prime is 1109901099071. The reversal of 1109901099021 is 1209901099011.

It is not a de Polignac number, because 1109901099021 - 2¹ = 1109901099019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109901099001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7149975 + ... + 7303556.

It is an arithmetic number, because the mean of its divisors is an integer number (54634350960).

Almost surely, 2^{1109901099021} is an apocalyptic number.

1109901099021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1109901099021 is a deficient number, since it is larger than the sum of its proper divisors (638398131699).

1109901099021 is a wasteful number, since it uses less digits than its factorization.

1109901099021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453737.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 1109901099021 in words is "one trillion, one hundred nine billion, nine hundred one million, ninety-nine thousand, twenty-one".