109091012 has 12 divisors (see below), whose sum is σ = 191024316. Its totient is φ = 54512640.

The previous prime is 109090999. The next prime is 109091033. The reversal of 109091012 is 210190901.

It can be written as a sum of positive squares in 2 ways, for example, as 45346756 + 63744256 = 6734^2 + 7984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 14772.

It is an arithmetic number, because the mean of its divisors is an integer number (15918693).

Almost surely, 2^109091012 is an apocalyptic number.

It is an amenable number.

109091012 is a deficient number, since it is larger than the sum of its proper divisors (81933304).

109091012 is a wasteful number, since it uses less digits than its factorization.

109091012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438 (or 16436 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 109091012 is about 10444.6642837384. The cubic root of 109091012 is about 477.8185325650.

The spelling of 109091012 in words is "one hundred nine million, ninety-one thousand, twelve".