12381100 has 36 divisors (see below), whose sum is σ = 28451304. Its totient is φ = 4660480.

The previous prime is 12381073. The next prime is 12381113. The reversal of 12381100 is 118321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1942 + ... + 5341.

It is an arithmetic number, because the mean of its divisors is an integer number (790314).

Almost surely, 2^12381100 is an apocalyptic number.

12381100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12381100 is an abundant number, since it is smaller than the sum of its proper divisors (16070204).

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

12381100 is a wasteful number, since it uses less digits than its factorization.

12381100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314 (or 7307 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 12381100 is about 3518.6787292960. The cubic root of 12381100 is about 231.3412495988.

Adding to 12381100 its reverse (118321), we get a palindrome (12499421).

The spelling of 12381100 in words is "twelve million, three hundred eighty-one thousand, one hundred".