200105220666061 has 2 divisors, whose sum is σ = 200105220666062. Its totient is φ = 200105220666060.

The previous prime is 200105220666059. The next prime is 200105220666089. The reversal of 200105220666061 is 160666022501002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152815805173161 + 47289415492900 = 12361869^2 + 6876730^2 .

It is a cyclic number.

It is not a de Polignac number, because 200105220666061 - 2¹ = 200105220666059 is a prime.

Together with 200105220666059, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 200105220666061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200105220666031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100052610333030 + 100052610333031.

It is an arithmetic number, because the mean of its divisors is an integer number (100052610333031).

Almost surely, 2^{200105220666061} is an apocalyptic number.

It is an amenable number.

200105220666061 is a deficient number, since it is larger than the sum of its proper divisors (1).

200105220666061 is an equidigital number, since it uses as much as digits as its factorization.

200105220666061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 200105220666061 in words is "two hundred trillion, one hundred five billion, two hundred twenty million, six hundred sixty-six thousand, sixty-one".