1002002220997 has 2 divisors, whose sum is σ = 1002002220998. Its totient is φ = 1002002220996.

The previous prime is 1002002220991. The next prime is 1002002221049. The reversal of 1002002220997 is 7990222002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793015184196 + 208987036801 = 890514^2 + 457151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002002220997 is a prime.

It is a super-3 number, since 3×1002002220997³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002002220991) 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, 501001110498 + 501001110499.

It is an arithmetic number, because the mean of its divisors is an integer number (501001110499).

Almost surely, 2^{1002002220997} is an apocalyptic number.

It is an amenable number.

1002002220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002220997 is an equidigital number, since it uses as much as digits as its factorization.

1002002220997 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.

Adding to 1002002220997 its reverse (7990222002001), we get a palindrome (8992224222998).

The spelling of 1002002220997 in words is "one trillion, two billion, two million, two hundred twenty thousand, nine hundred ninety-seven".