12116220432 has 40 divisors (see below), whose sum is σ = 31741093440. Its totient is φ = 3981855360.

The previous prime is 12116220407. The next prime is 12116220443. The reversal of 12116220432 is 23402261121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774207 + ... + 1781022.

It is an arithmetic number, because the mean of its divisors is an integer number (793527336).

Almost surely, 2^12116220432 is an apocalyptic number.

12116220432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12116220432 is an abundant number, since it is smaller than the sum of its proper divisors (19624873008).

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

12116220432 is a wasteful number, since it uses less digits than its factorization.

12116220432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555311 (or 3555305 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12116220432 its reverse (23402261121), we get a palindrome (35518481553).

The spelling of 12116220432 in words is "twelve billion, one hundred sixteen million, two hundred twenty thousand, four hundred thirty-two".