12103100 has 36 divisors (see below), whose sum is σ = 26498304. Its totient is φ = 4798080.

The previous prime is 12103093. The next prime is 12103109. The reversal of 12103100 is 130121.

It is a super-2 number, since 2×12103100² = 292970059220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12224 + ... + 13176.

It is an arithmetic number, because the mean of its divisors is an integer number (736064).

Almost surely, 2^12103100 is an apocalyptic number.

12103100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13249152).

12103100 is an abundant number, since it is smaller than the sum of its proper divisors (14395204).

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

12103100 is a wasteful number, since it uses less digits than its factorization.

12103100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 12103100 is about 3478.9509913191. The cubic root of 12103100 is about 229.5966465454.

Adding to 12103100 its reverse (130121), we get a palindrome (12233221).

The spelling of 12103100 in words is "twelve million, one hundred three thousand, one hundred".