109912 has 16 divisors (see below), whose sum is σ = 225000. Its totient is φ = 49920.

The previous prime is 109903. The next prime is 109913. The reversal of 109912 is 219901.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109913) by changing a digit.

109912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537 + ... + 712.

2¹⁰⁹⁹¹² is an apocalyptic number.

It is an amenable number.

109912 is an abundant number, since it is smaller than the sum of its proper divisors (115088).

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

109912 is a wasteful number, since it uses less digits than its factorization.

109912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 109912 is about 331.5297875003. The cubic root of 109912 is about 47.9014180423.

It can be divided in two parts, 1099 and 12, that added together give a palindrome (1111).

The spelling of 109912 in words is "one hundred nine thousand, nine hundred twelve".