1002221222077 has 2 divisors, whose sum is σ = 1002221222078. Its totient is φ = 1002221222076.

The previous prime is 1002221222033. The next prime is 1002221222111. The reversal of 1002221222077 is 7702221222001.

1002221222077 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 can be written as a sum of positive squares in only one way, i.e., 817132834116 + 185088387961 = 903954^2 + 430219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002221222077 - 2¹⁹ = 1002220697789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002221222017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110611038 + 501110611039.

It is an arithmetic number, because the mean of its divisors is an integer number (501110611039).

Almost surely, 2^{1002221222077} is an apocalyptic number.

It is an amenable number.

1002221222077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002221222077 is an equidigital number, since it uses as much as digits as its factorization.

1002221222077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

Adding to 1002221222077 its reverse (7702221222001), we get a palindrome (8704442444078).

The spelling of 1002221222077 in words is "one trillion, two billion, two hundred twenty-one million, two hundred twenty-two thousand, seventy-seven".