12113233820 has 24 divisors (see below), whose sum is σ = 26543782944. Its totient is φ = 4634628416.

The previous prime is 12113233747. The next prime is 12113233823. The reversal of 12113233820 is 2833231121.

It is a self number, because there is not a number n which added to its sum of digits gives 12113233820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113233823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13166099 + ... + 13167018.

It is an arithmetic number, because the mean of its divisors is an integer number (1105990956).

Almost surely, 2^12113233820 is an apocalyptic number.

12113233820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113233820 is an abundant number, since it is smaller than the sum of its proper divisors (14430549124).

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

12113233820 is a wasteful number, since it uses less digits than its factorization.

12113233820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26333149 (or 26333147 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 12113233820 its reverse (2833231121), we get a palindrome (14946464941).

The spelling of 12113233820 in words is "twelve billion, one hundred thirteen million, two hundred thirty-three thousand, eight hundred twenty".