12109050 has 72 divisors (see below), whose sum is σ = 33078240. Its totient is φ = 3175200.

The previous prime is 12109039. The next prime is 12109051. The reversal of 12109050 is 5090121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12109051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31761 + ... + 32139.

It is an arithmetic number, because the mean of its divisors is an integer number (459420).

Almost surely, 2^12109050 is an apocalyptic number.

12109050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12109050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16539120).

12109050 is an abundant number, since it is smaller than the sum of its proper divisors (20969190).

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

12109050 is a wasteful number, since it uses less digits than its factorization.

12109050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 12109050 is about 3479.8060290769. The cubic root of 12109050 is about 229.6342643526.

Adding to 12109050 its reverse (5090121), we get a palindrome (17199171).

The spelling of 12109050 in words is "twelve million, one hundred nine thousand, fifty".