12812118 has 64 divisors (see below), whose sum is σ = 31207680. Its totient is φ = 3456000.

The previous prime is 12812117. The next prime is 12812119. The reversal of 12812118 is 81121821.

It is an interprime number because it is at equal distance from previous prime (12812117) and next prime (12812119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21018 + ... + 21618.

It is an arithmetic number, because the mean of its divisors is an integer number (487620).

Almost surely, 2^12812118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12812118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15603840).

12812118 is an abundant number, since it is smaller than the sum of its proper divisors (18395562).

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

12812118 is a wasteful number, since it uses less digits than its factorization.

12812118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its digits is 256, while the sum is 24.

The square root of 12812118 is about 3579.4019053468. The cubic root of 12812118 is about 233.9952150384.

Adding to 12812118 its reverse (81121821), we get a palindrome (93933939).

It can be divided in two parts, 128 and 12118, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 12812118 in words is "twelve million, eight hundred twelve thousand, one hundred eighteen".