109912220 has 24 divisors (see below), whose sum is σ = 251799408. Its totient is φ = 39968000.

The previous prime is 109912217. The next prime is 109912247. The reversal of 109912220 is 22219901.

It is a happy number.

It is a super-2 number, since 2×109912220² = 24161392210656800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109912220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249581 + ... + 250020.

It is an arithmetic number, because the mean of its divisors is an integer number (10491642).

Almost surely, 2^109912220 is an apocalyptic number.

109912220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109912220 is an abundant number, since it is smaller than the sum of its proper divisors (141887188).

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

109912220 is a wasteful number, since it uses less digits than its factorization.

109912220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499621 (or 499619 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 109912220 is about 10483.9028992070. The cubic root of 109912220 is about 479.0145000209.

The spelling of 109912220 in words is "one hundred nine million, nine hundred twelve thousand, two hundred twenty".