12221313947 has 2 divisors, whose sum is σ = 12221313948. Its totient is φ = 12221313946.

The previous prime is 12221313943. The next prime is 12221314003. The reversal of 12221313947 is 74931312221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221313947 - 2² = 12221313943 is a prime.

It is a super-2 number, since 2×12221313947² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12221313941) 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, 6110656973 + 6110656974.

It is an arithmetic number, because the mean of its divisors is an integer number (6110656974).

Almost surely, 2^12221313947 is an apocalyptic number.

12221313947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221313947 is an equidigital number, since it uses as much as digits as its factorization.

12221313947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The spelling of 12221313947 in words is "twelve billion, two hundred twenty-one million, three hundred thirteen thousand, nine hundred forty-seven".