13222221232 has 80 divisors (see below), whose sum is σ = 29782950912. Its totient is φ = 5626396160.

The previous prime is 13222221197. The next prime is 13222221253. The reversal of 13222221232 is 23212222231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155508 + ... + 225004.

Almost surely, 2^13222221232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13222221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14891475456).

13222221232 is an abundant number, since it is smaller than the sum of its proper divisors (16560729680).

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

13222221232 is a wasteful number, since it uses less digits than its factorization.

13222221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69586 (or 69580 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

Adding to 13222221232 its reverse (23212222231), we get a palindrome (36434443463).

Subtracting 13222221232 from its reverse (23212222231), we obtain a palindrome (9990000999).

The spelling of 13222221232 in words is "thirteen billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred thirty-two".