12220211947 has 2 divisors, whose sum is σ = 12220211948. Its totient is φ = 12220211946.

The previous prime is 12220211929. The next prime is 12220211953. The reversal of 12220211947 is 74911202221.

12220211947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (74911202221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12220211947 - 2⁷ = 12220211819 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220211977) 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, 6110105973 + 6110105974.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105974).

Almost surely, 2^12220211947 is an apocalyptic number.

12220211947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220211947 is an equidigital number, since it uses as much as digits as its factorization.

12220211947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 12220211947 in words is "twelve billion, two hundred twenty million, two hundred eleven thousand, nine hundred forty-seven".