13362121 has 4 divisors (see below), whose sum is σ = 13672912. Its totient is φ = 13051332.

The previous prime is 13362091. The next prime is 13362133. The reversal of 13362121 is 12126331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12126331 = 7 ⋅1732333.

It is a cyclic number.

It is not a de Polignac number, because 13362121 - 2¹¹ = 13360073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13362161) 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, 155331 + ... + 155416.

It is an arithmetic number, because the mean of its divisors is an integer number (3418228).

Almost surely, 2^13362121 is an apocalyptic number.

It is an amenable number.

13362121 is a deficient number, since it is larger than the sum of its proper divisors (310791).

13362121 is an equidigital number, since it uses as much as digits as its factorization.

13362121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310790.

The product of its digits is 216, while the sum is 19.

The square root of 13362121 is about 3655.4235048760. The cubic root of 13362121 is about 237.2967553902.

Adding to 13362121 its reverse (12126331), we get a palindrome (25488452).

The spelling of 13362121 in words is "thirteen million, three hundred sixty-two thousand, one hundred twenty-one".