12121379 has 2 divisors, whose sum is σ = 12121380. Its totient is φ = 12121378.

The previous prime is 12121367. The next prime is 12121387. The reversal of 12121379 is 97312121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121379 - 2¹² = 12117283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12121309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060689 + 6060690.

It is an arithmetic number, because the mean of its divisors is an integer number (6060690).

Almost surely, 2^12121379 is an apocalyptic number.

12121379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121379 is an equidigital number, since it uses as much as digits as its factorization.

12121379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 12121379 is about 3481.5770851728. The cubic root of 12121379 is about 229.7121730387.

The spelling of 12121379 in words is "twelve million, one hundred twenty-one thousand, three hundred seventy-nine".