12231011220 has 48 divisors (see below), whose sum is σ = 34251880320. Its totient is φ = 3261122176.

The previous prime is 12231011213. The next prime is 12231011249. The reversal of 12231011220 is 2211013221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12231011220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610726 + ... + 630434.

It is an arithmetic number, because the mean of its divisors is an integer number (713580840).

Almost surely, 2^12231011220 is an apocalyptic number.

12231011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231011220 is an abundant number, since it is smaller than the sum of its proper divisors (22020869100).

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

12231011220 is a wasteful number, since it uses less digits than its factorization.

12231011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30064 (or 30062 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12231011220 its reverse (2211013221), we get a palindrome (14442024441).

The spelling of 12231011220 in words is "twelve billion, two hundred thirty-one million, eleven thousand, two hundred twenty".