12513100 has 18 divisors (see below), whose sum is σ = 27153644. Its totient is φ = 5005200.

The previous prime is 12513049. The next prime is 12513101. The reversal of 12513100 is 131521.

It is a super-2 number, since 2×12513100² = 313155343220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12513101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62466 + ... + 62665.

Almost surely, 2^12513100 is an apocalyptic number.

12513100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12513100 is an abundant number, since it is smaller than the sum of its proper divisors (14640544).

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

12513100 is a wasteful number, since it uses less digits than its factorization.

12513100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125145 (or 125138 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 12513100 is about 3537.3860405672. The cubic root of 12513100 is about 232.1604864605.

Adding to 12513100 its reverse (131521), we get a palindrome (12644621).

It can be divided in two parts, 125 and 13100, that added together give a square (13225 = 115²).

The spelling of 12513100 in words is "twelve million, five hundred thirteen thousand, one hundred".