12013022232 has 48 divisors (see below), whose sum is σ = 34247655000. Its totient is φ = 3793585536.

The previous prime is 12013022209. The next prime is 12013022261. The reversal of 12013022232 is 23222031021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4389357 + ... + 4392092.

Almost surely, 2^12013022232 is an apocalyptic number.

12013022232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013022232 is an abundant number, since it is smaller than the sum of its proper divisors (22234632768).

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

12013022232 is a wasteful number, since it uses less digits than its factorization.

12013022232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781480 (or 8781473 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12013022232 its reverse (23222031021), we get a palindrome (35235053253).

The spelling of 12013022232 in words is "twelve billion, thirteen million, twenty-two thousand, two hundred thirty-two".