200210122211861 has 2 divisors, whose sum is σ = 200210122211862. Its totient is φ = 200210122211860.

The previous prime is 200210122211843. The next prime is 200210122211899. The reversal of 200210122211861 is 168112221012002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187096055029636 + 13114067182225 = 13678306^2 + 3621335^2 .

It is a cyclic number.

It is not a de Polignac number, because 200210122211861 - 2¹⁰ = 200210122210837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200210122211831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105061105930 + 100105061105931.

It is an arithmetic number, because the mean of its divisors is an integer number (100105061105931).

Almost surely, 2^{200210122211861} is an apocalyptic number.

It is an amenable number.

200210122211861 is a deficient number, since it is larger than the sum of its proper divisors (1).

200210122211861 is an equidigital number, since it uses as much as digits as its factorization.

200210122211861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

Adding to 200210122211861 its reverse (168112221012002), we get a palindrome (368322343223863).

The spelling of 200210122211861 in words is "two hundred trillion, two hundred ten billion, one hundred twenty-two million, two hundred eleven thousand, eight hundred sixty-one".