13220323000 has 128 divisors (see below), whose sum is σ = 31547880000. Its totient is φ = 5184499200.

The previous prime is 13220322977. The next prime is 13220323031. The reversal of 13220323000 is 32302231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12366466 + ... + 12367534.

Almost surely, 2^13220323000 is an apocalyptic number.

13220323000 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 13220323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15773940000).

13220323000 is an abundant number, since it is smaller than the sum of its proper divisors (18327557000).

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

13220323000 is a wasteful number, since it uses less digits than its factorization.

13220323000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 13220323000 its reverse (32302231), we get a palindrome (13252625231).

The spelling of 13220323000 in words is "thirteen billion, two hundred twenty million, three hundred twenty-three thousand".