1200020200997 has 2 divisors, whose sum is σ = 1200020200998. Its totient is φ = 1200020200996.

The previous prime is 1200020200943. The next prime is 1200020201053. The reversal of 1200020200997 is 7990020200021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197812046916 + 2208154081 = 1094446^2 + 46991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200020200997 - 2¹² = 1200020196901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200020200297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600010100498 + 600010100499.

It is an arithmetic number, because the mean of its divisors is an integer number (600010100499).

Almost surely, 2^{1200020200997} is an apocalyptic number.

It is an amenable number.

1200020200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200020200997 is an equidigital number, since it uses as much as digits as its factorization.

1200020200997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 1200020200997 in words is "one trillion, two hundred billion, twenty million, two hundred thousand, nine hundred ninety-seven".