12109810 has 16 divisors (see below), whose sum is σ = 21845376. Its totient is φ = 4833328.

The previous prime is 12109697. The next prime is 12109817. The reversal of 12109810 is 1890121.

It is a super-2 number, since 2×12109810² = 293294996472200, which contains 22 as substring.

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 (12109817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4839 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (1365336).

Almost surely, 2^12109810 is an apocalyptic number.

12109810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12109810 is a deficient number, since it is larger than the sum of its proper divisors (9735566).

12109810 is a wasteful number, since it uses less digits than its factorization.

12109810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12109810 is about 3479.9152288526. The cubic root of 12109810 is about 229.6390684286.

Adding to 12109810 its reverse (1890121), we get a palindrome (13999931).

The spelling of 12109810 in words is "twelve million, one hundred nine thousand, eight hundred ten".