13322144220 has 192 divisors, whose sum is σ = 46714945536. Its totient is φ = 2755825920.

The previous prime is 13322144141. The next prime is 13322144243. The reversal of 13322144220 is 2244122331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1042389 + ... + 1055091.

It is an arithmetic number, because the mean of its divisors is an integer number (243307008).

Almost surely, 2^13322144220 is an apocalyptic number.

13322144220 is a gapful number since it is divisible by the number (10) 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 13322144220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23357472768).

13322144220 is an abundant number, since it is smaller than the sum of its proper divisors (33392801316).

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

13322144220 is a wasteful number, since it uses less digits than its factorization.

13322144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960 (or 12958 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13322144220 its reverse (2244122331), we get a palindrome (15566266551).

The spelling of 13322144220 in words is "thirteen billion, three hundred twenty-two million, one hundred forty-four thousand, two hundred twenty".