12116810420 has 96 divisors (see below), whose sum is σ = 30190478976. Its totient is φ = 4026816000.

The previous prime is 12116810347. The next prime is 12116810423. The reversal of 12116810420 is 2401861121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 12116810420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116810423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267887 + ... + 309833.

It is an arithmetic number, because the mean of its divisors is an integer number (314484156).

Almost surely, 2^12116810420 is an apocalyptic number.

12116810420 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 12116810420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15095239488).

12116810420 is an abundant number, since it is smaller than the sum of its proper divisors (18073668556).

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

12116810420 is a wasteful number, since it uses less digits than its factorization.

12116810420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42081 (or 42079 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The spelling of 12116810420 in words is "twelve billion, one hundred sixteen million, eight hundred ten thousand, four hundred twenty".