13322121 has 4 divisors (see below), whose sum is σ = 17762832. Its totient is φ = 8881412.

The previous prime is 13322119. The next prime is 13322137. The reversal of 13322121 is 12122331.

13322121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13322121 - 2¹ = 13322119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13322121.

It is not an unprimeable number, because it can be changed into a prime (13322821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220351 + ... + 2220356.

It is an arithmetic number, because the mean of its divisors is an integer number (4440708).

Almost surely, 2^13322121 is an apocalyptic number.

It is an amenable number.

13322121 is a deficient number, since it is larger than the sum of its proper divisors (4440711).

13322121 is an equidigital number, since it uses as much as digits as its factorization.

13322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440710.

The product of its digits is 72, while the sum is 15.

The square root of 13322121 is about 3649.9480818225. The cubic root of 13322121 is about 237.0597332034.

Adding to 13322121 its reverse (12122331), we get a palindrome (25444452).

The spelling of 13322121 in words is "thirteen million, three hundred twenty-two thousand, one hundred twenty-one".