1020002220997 has 2 divisors, whose sum is σ = 1020002220998. Its totient is φ = 1020002220996.

The previous prime is 1020002220971. The next prime is 1020002221003. The reversal of 1020002220997 is 7990222000201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859757327361 + 160244893636 = 927231^2 + 400306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020002220997 - 2²⁷ = 1019868003269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002220967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001110498 + 510001110499.

It is an arithmetic number, because the mean of its divisors is an integer number (510001110499).

Almost surely, 2^{1020002220997} is an apocalyptic number.

It is an amenable number.

1020002220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002220997 is an equidigital number, since it uses as much as digits as its factorization.

1020002220997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 1020002220997 in words is "one trillion, twenty billion, two million, two hundred twenty thousand, nine hundred ninety-seven".