12001279 has 2 divisors, whose sum is σ = 12001280. Its totient is φ = 12001278.

The previous prime is 12001271. The next prime is 12001289. The reversal of 12001279 is 97210021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001279 - 2³ = 12001271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000639 + 6000640.

It is an arithmetic number, because the mean of its divisors is an integer number (6000640).

Almost surely, 2^12001279 is an apocalyptic number.

12001279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001279 is an equidigital number, since it uses as much as digits as its factorization.

12001279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 12001279 is about 3464.2862179676. The cubic root of 12001279 is about 228.9509820524.

The spelling of 12001279 in words is "twelve million, one thousand, two hundred seventy-nine".