12013224020 has 24 divisors (see below), whose sum is σ = 28831737984. Its totient is φ = 4118819616.

The previous prime is 12013224011. The next prime is 12013224023. The reversal of 12013224020 is 2042231021.

It is a self number, because there is not a number n which added to its sum of digits gives 12013224020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013224023) 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, 42904232 + ... + 42904511.

It is an arithmetic number, because the mean of its divisors is an integer number (1201322416).

Almost surely, 2^12013224020 is an apocalyptic number.

12013224020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013224020 is an abundant number, since it is smaller than the sum of its proper divisors (16818513964).

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

12013224020 is a wasteful number, since it uses less digits than its factorization.

12013224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85808759 (or 85808757 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12013224020 its reverse (2042231021), we get a palindrome (14055455041).

The spelling of 12013224020 in words is "twelve billion, thirteen million, two hundred twenty-four thousand, twenty".