12210229979 has 2 divisors, whose sum is σ = 12210229980. Its totient is φ = 12210229978.

The previous prime is 12210229931. The next prime is 12210230033. The reversal of 12210229979 is 97992201221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12210229979 - 2²⁴ = 12193452763 is a prime.

It is a super-2 number, since 2×12210229979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12210229679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105114989 + 6105114990.

It is an arithmetic number, because the mean of its divisors is an integer number (6105114990).

Almost surely, 2^12210229979 is an apocalyptic number.

12210229979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210229979 is an equidigital number, since it uses as much as digits as its factorization.

12210229979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 12210229979 in words is "twelve billion, two hundred ten million, two hundred twenty-nine thousand, nine hundred seventy-nine".