12002109979 has 2 divisors, whose sum is σ = 12002109980. Its totient is φ = 12002109978.

The previous prime is 12002109971. The next prime is 12002110039. The reversal of 12002109979 is 97990120021.

It is a happy number.

12002109979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12002109979 - 2³ = 12002109971 is a prime.

It is a super-2 number, since 2×12002109979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12002109971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001054989 + 6001054990.

It is an arithmetic number, because the mean of its divisors is an integer number (6001054990).

Almost surely, 2^12002109979 is an apocalyptic number.

12002109979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002109979 is an equidigital number, since it uses as much as digits as its factorization.

12002109979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 12002109979 in words is "twelve billion, two million, one hundred nine thousand, nine hundred seventy-nine".