200210221100861 has 2 divisors, whose sum is σ = 200210221100862. Its totient is φ = 200210221100860.

The previous prime is 200210221100839. The next prime is 200210221101073. The reversal of 200210221100861 is 168001122012002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160989937088761 + 39220284012100 = 12688181^2 + 6262610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200210221100861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200210221100861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200210221160861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105110550430 + 100105110550431.

It is an arithmetic number, because the mean of its divisors is an integer number (100105110550431).

Almost surely, 2^{200210221100861} is an apocalyptic number.

It is an amenable number.

200210221100861 is a deficient number, since it is larger than the sum of its proper divisors (1).

200210221100861 is an equidigital number, since it uses as much as digits as its factorization.

200210221100861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

Adding to 200210221100861 its reverse (168001122012002), we get a palindrome (368211343112863).

The spelling of 200210221100861 in words is "two hundred trillion, two hundred ten billion, two hundred twenty-one million, one hundred thousand, eight hundred sixty-one".