200212220097781 has 2 divisors, whose sum is σ = 200212220097782. Its totient is φ = 200212220097780.

The previous prime is 200212220097749. The next prime is 200212220097803. The reversal of 200212220097781 is 187790022212002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109404089848881 + 90808130248900 = 10459641^2 + 9529330^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212220097781 - 2⁵ = 200212220097749 is a prime.

It is a super-2 number, since 2×200212220097781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200216220097781) 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, 100106110048890 + 100106110048891.

It is an arithmetic number, because the mean of its divisors is an integer number (100106110048891).

Almost surely, 2^{200212220097781} is an apocalyptic number.

It is an amenable number.

200212220097781 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212220097781 is an equidigital number, since it uses as much as digits as its factorization.

200212220097781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 200212220097781 in words is "two hundred trillion, two hundred twelve billion, two hundred twenty million, ninety-seven thousand, seven hundred eighty-one".