13233221232 has 160 divisors (see below), whose sum is σ = 44864747520. Its totient is φ = 3256277760.

The previous prime is 13233221227. The next prime is 13233221237. The reversal of 13233221232 is 23212233231.

It is an interprime number because it is at equal distance from previous prime (13233221227) and next prime (13233221237).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13233221237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23998 + ... + 164445.

It is an arithmetic number, because the mean of its divisors is an integer number (280404672).

Almost surely, 2^13233221232 is an apocalyptic number.

13233221232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13233221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22432373760).

13233221232 is an abundant number, since it is smaller than the sum of its proper divisors (31631526288).

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

13233221232 is a wasteful number, since it uses less digits than its factorization.

13233221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188491 (or 188485 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

Adding to 13233221232 its reverse (23212233231), we get a palindrome (36445454463).

The spelling of 13233221232 in words is "thirteen billion, two hundred thirty-three million, two hundred twenty-one thousand, two hundred thirty-two".