13220224140 has 144 divisors (see below), whose sum is σ = 37984272480. Its totient is φ = 3435264000.

The previous prime is 13220224081. The next prime is 13220224163. The reversal of 13220224140 is 4142202231.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32967940 + ... + 32968340.

It is an arithmetic number, because the mean of its divisors is an integer number (263779670).

Almost surely, 2^13220224140 is an apocalyptic number.

13220224140 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 13220224140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18992136240).

13220224140 is an abundant number, since it is smaller than the sum of its proper divisors (24764048340).

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

13220224140 is a wasteful number, since it uses less digits than its factorization.

13220224140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 13220224140 its reverse (4142202231), we get a palindrome (17362426371).

The spelling of 13220224140 in words is "thirteen billion, two hundred twenty million, two hundred twenty-four thousand, one hundred forty".