202021119997 has 2 divisors, whose sum is σ = 202021119998. Its totient is φ = 202021119996.

The previous prime is 202021119967. The next prime is 202021120033. The reversal of 202021119997 is 799911120202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198113119801 + 3908000196 = 445099^2 + 62514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021119997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021119967) 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, 101010559998 + 101010559999.

It is an arithmetic number, because the mean of its divisors is an integer number (101010559999).

Almost surely, 2^202021119997 is an apocalyptic number.

It is an amenable number.

202021119997 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021119997 is an equidigital number, since it uses as much as digits as its factorization.

202021119997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 202021119997 in words is "two hundred two billion, twenty-one million, one hundred nineteen thousand, nine hundred ninety-seven".