12220333412 has 96 divisors (see below), whose sum is σ = 26255093760. Its totient is φ = 4864083840.

The previous prime is 12220333387. The next prime is 12220333423. The reversal of 12220333412 is 21433302221.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3061514 + ... + 3065502.

It is an arithmetic number, because the mean of its divisors is an integer number (273490560).

Almost surely, 2^12220333412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220333412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13127546880).

12220333412 is an abundant number, since it is smaller than the sum of its proper divisors (14034760348).

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

12220333412 is a wasteful number, since it uses less digits than its factorization.

12220333412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12220333412 its reverse (21433302221), we get a palindrome (33653635633).

The spelling of 12220333412 in words is "twelve billion, two hundred twenty million, three hundred thirty-three thousand, four hundred twelve".