12113233131220 has 48 divisors (see below), whose sum is σ = 28339182038160. Its totient is φ = 4318351543296.

The previous prime is 12113233131217. The next prime is 12113233131221. The reversal of 12113233131220 is 2213133231121.

It can be written as a sum of positive squares in 8 ways, for example, as 900365663376 + 11212867467844 = 948876^2 + 3348562^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113233131221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803257257 + ... + 803272336.

It is an arithmetic number, because the mean of its divisors is an integer number (590399625795).

Almost surely, 2^{12113233131220} is an apocalyptic number.

12113233131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113233131220 is an abundant number, since it is smaller than the sum of its proper divisors (16225948906940).

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

12113233131220 is a wasteful number, since it uses less digits than its factorization.

12113233131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606529644 (or 1606529642 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12113233131220 its reverse (2213133231121), we get a palindrome (14326366362341).

Subtracting from 12113233131220 its reverse (2213133231121), we obtain a palindrome (9900099900099).

The spelling of 12113233131220 in words is "twelve trillion, one hundred thirteen billion, two hundred thirty-three million, one hundred thirty-one thousand, two hundred twenty".