1222212221947 has 2 divisors, whose sum is σ = 1222212221948. Its totient is φ = 1222212221946.

The previous prime is 1222212221897. The next prime is 1222212221983. The reversal of 1222212221947 is 7491222122221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222212221947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222212228947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611106110973 + 611106110974.

It is an arithmetic number, because the mean of its divisors is an integer number (611106110974).

Almost surely, 2^{1222212221947} is an apocalyptic number.

1222212221947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222212221947 is an equidigital number, since it uses as much as digits as its factorization.

1222212221947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The spelling of 1222212221947 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, nine hundred forty-seven".