1222077106721 has 2 divisors, whose sum is σ = 1222077106722. Its totient is φ = 1222077106720.

The previous prime is 1222077106717. The next prime is 1222077106751. The reversal of 1222077106721 is 1276017702221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 851818243600 + 370258863121 = 922940^2 + 608489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222077106721 - 2² = 1222077106717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1222077106751) 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, 611038553360 + 611038553361.

It is an arithmetic number, because the mean of its divisors is an integer number (611038553361).

Almost surely, 2^{1222077106721} is an apocalyptic number.

It is an amenable number.

1222077106721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222077106721 is an equidigital number, since it uses as much as digits as its factorization.

1222077106721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 1222077106721 in words is "one trillion, two hundred twenty-two billion, seventy-seven million, one hundred six thousand, seven hundred twenty-one".