12118910 has 16 divisors (see below), whose sum is σ = 21888576. Its totient is φ = 4831008.

The previous prime is 12118891. The next prime is 12118921. The reversal of 12118910 is 1981121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (1368036).

Almost surely, 2^12118910 is an apocalyptic number.

12118910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12118910 is a deficient number, since it is larger than the sum of its proper divisors (9769666).

12118910 is a wasteful number, since it uses less digits than its factorization.

12118910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 12118910 is about 3481.2224864263. Note that the first 3 decimals coincide. The cubic root of 12118910 is about 229.6965753120.

The spelling of 12118910 in words is "twelve million, one hundred eighteen thousand, nine hundred ten".