109199210920 has 32 divisors (see below), whose sum is σ = 245839506120. Its totient is φ = 43654567680.

The previous prime is 109199210903. The next prime is 109199210933. The reversal of 109199210920 is 29012991901.

109199210920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 21065039044 + 88134171876 = 145138^2 + 296874^2 .

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, 714387 + ... + 853666.

Almost surely, 2^109199210920 is an apocalyptic number.

109199210920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109199210920 is an abundant number, since it is smaller than the sum of its proper divisors (136640295200).

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

109199210920 is a wasteful number, since it uses less digits than its factorization.

109199210920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569805 (or 1569801 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 109199210920 in words is "one hundred nine billion, one hundred ninety-nine million, two hundred ten thousand, nine hundred twenty".