13520251222 has 4 divisors (see below), whose sum is σ = 20280376836. Its totient is φ = 6760125610.

The previous prime is 13520251189. The next prime is 13520251223. The reversal of 13520251222 is 22215202531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520251223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380062804 + ... + 3380062807.

It is an arithmetic number, because the mean of its divisors is an integer number (5070094209).

Almost surely, 2^13520251222 is an apocalyptic number.

13520251222 is a deficient number, since it is larger than the sum of its proper divisors (6760125614).

13520251222 is an equidigital number, since it uses as much as digits as its factorization.

13520251222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760125613.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 13520251222 its reverse (22215202531), we get a palindrome (35735453753).

The spelling of 13520251222 in words is "thirteen billion, five hundred twenty million, two hundred fifty-one thousand, two hundred twenty-two".