13521022240 has 48 divisors (see below), whose sum is σ = 34847366400. Its totient is φ = 4916734720.

The previous prime is 13521022219. The next prime is 13521022247. The reversal of 13521022240 is 4222012531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (13521022247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3839440 + ... + 3842959.

It is an arithmetic number, because the mean of its divisors is an integer number (725986800).

Almost surely, 2^13521022240 is an apocalyptic number.

13521022240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13521022240 is an abundant number, since it is smaller than the sum of its proper divisors (21326344160).

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

13521022240 is a wasteful number, since it uses less digits than its factorization.

13521022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7682425 (or 7682417 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 13521022240 its reverse (4222012531), we get a palindrome (17743034771).

The spelling of 13521022240 in words is "thirteen billion, five hundred twenty-one million, twenty-two thousand, two hundred forty".