12521118 has 8 divisors (see below), whose sum is σ = 25042248. Its totient is φ = 4173704.

The previous prime is 12521107. The next prime is 12521137. The reversal of 12521118 is 81112521.

It is a sphenic number, since it is the product of 3 distinct primes.

12521118 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12521094 and 12521103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043421 + ... + 1043432.

It is an arithmetic number, because the mean of its divisors is an integer number (3130281).

Almost surely, 2^12521118 is an apocalyptic number.

12521118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12521118 is a wasteful number, since it uses less digits than its factorization.

12521118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086858.

The product of its digits is 160, while the sum is 21.

The square root of 12521118 is about 3538.5191818047. The cubic root of 12521118 is about 232.2100629133.

Adding to 12521118 its reverse (81112521), we get a palindrome (93633639).

It can be divided in two parts, 12 and 521118, that multiplied together give a triangular number (6253416 = T₃₅₃₆).

The spelling of 12521118 in words is "twelve million, five hundred twenty-one thousand, one hundred eighteen".