13626121 has 4 divisors (see below), whose sum is σ = 13657600. Its totient is φ = 13594644.

The previous prime is 13626091. The next prime is 13626133. The reversal of 13626121 is 12162631.

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: 12162631 = 13 ⋅935587.

It is a cyclic number.

It is not a de Polignac number, because 13626121 - 2¹⁷ = 13495049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13626092 and 13626101.

It is not an unprimeable number, because it can be changed into a prime (13626181) 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, 15081 + ... + 15958.

It is an arithmetic number, because the mean of its divisors is an integer number (3414400).

Almost surely, 2^13626121 is an apocalyptic number.

It is an amenable number.

13626121 is a deficient number, since it is larger than the sum of its proper divisors (31479).

13626121 is an equidigital number, since it uses as much as digits as its factorization.

13626121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31478.

The product of its digits is 432, while the sum is 22.

The square root of 13626121 is about 3691.3576093356. The cubic root of 13626121 is about 238.8493591544.

Adding to 13626121 its reverse (12162631), we get a palindrome (25788752).

The spelling of 13626121 in words is "thirteen million, six hundred twenty-six thousand, one hundred twenty-one".