12670121 has 4 divisors (see below), whose sum is σ = 12687744. Its totient is φ = 12652500.

The previous prime is 12670111. The next prime is 12670139. The reversal of 12670121 is 12107621.

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 12670121 - 2¹⁴ = 12653737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12670093 and 12670102.

It is not an unprimeable number, because it can be changed into a prime (12670111) 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, 7685 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (3171936).

Almost surely, 2^12670121 is an apocalyptic number.

It is an amenable number.

12670121 is a deficient number, since it is larger than the sum of its proper divisors (17623).

12670121 is an equidigital number, since it uses as much as digits as its factorization.

12670121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17622.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 12670121 is about 3559.5113428672. The cubic root of 12670121 is about 233.1275434990.

Adding to 12670121 its reverse (12107621), we get a palindrome (24777742).

Subtracting from 12670121 its reverse (12107621), we obtain a square (562500 = 750²).

The spelling of 12670121 in words is "twelve million, six hundred seventy thousand, one hundred twenty-one".