13220202128 has 160 divisors (see below), whose sum is σ = 31587978240. Its totient is φ = 5234112000.

The previous prime is 13220202103. The next prime is 13220202179. The reversal of 13220202128 is 82120202231.

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, 28308551 + ... + 28309017.

It is an arithmetic number, because the mean of its divisors is an integer number (197424864).

Almost surely, 2^13220202128 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 13220202128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15793989120).

13220202128 is an abundant number, since it is smaller than the sum of its proper divisors (18367776112).

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

13220202128 is a wasteful number, since it uses less digits than its factorization.

13220202128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 13220202128 its reverse (82120202231), we get a palindrome (95340404359).

The spelling of 13220202128 in words is "thirteen billion, two hundred twenty million, two hundred two thousand, one hundred twenty-eight".