13221140240 has 80 divisors (see below), whose sum is σ = 38324154240. Its totient is φ = 4120872960.

The previous prime is 13221140237. The next prime is 13221140269. The reversal of 13221140240 is 4204112231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1066985 + ... + 1079304.

It is an arithmetic number, because the mean of its divisors is an integer number (479051928).

Almost surely, 2^13221140240 is an apocalyptic number.

13221140240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221140240 is an abundant number, since it is smaller than the sum of its proper divisors (25103014000).

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

13221140240 is a wasteful number, since it uses less digits than its factorization.

13221140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146320 (or 2146314 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 13221140240 its reverse (4204112231), we get a palindrome (17425252471).

The spelling of 13221140240 in words is "thirteen billion, two hundred twenty-one million, one hundred forty thousand, two hundred forty".