202021000117 has 2 divisors, whose sum is σ = 202021000118. Its totient is φ = 202021000116.

The previous prime is 202021000087. The next prime is 202021000141. The reversal of 202021000117 is 711000120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172146988836 + 29874011281 = 414906^2 + 172841^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021000117 - 2⁷ = 202020999989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202021000117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021000177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010500058 + 101010500059.

It is an arithmetic number, because the mean of its divisors is an integer number (101010500059).

Almost surely, 2^202021000117 is an apocalyptic number.

It is an amenable number.

202021000117 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021000117 is an equidigital number, since it uses as much as digits as its factorization.

202021000117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 202021000117 its reverse (711000120202), we get a palindrome (913021120319).

The spelling of 202021000117 in words is "two hundred two billion, twenty-one million, one hundred seventeen", and thus it is an aban number.