200212221997 has 2 divisors, whose sum is σ = 200212221998. Its totient is φ = 200212221996.

The previous prime is 200212221961. The next prime is 200212222033. The reversal of 200212221997 is 799122212002.

It is a balanced prime because it is at equal distance from previous prime (200212221961) and next prime (200212222033).

It can be written as a sum of positive squares in only one way, i.e., 132055199236 + 68157022761 = 363394^2 + 261069^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212221997 - 2¹⁹ = 200211697709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200212221947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100106110998 + 100106110999.

It is an arithmetic number, because the mean of its divisors is an integer number (100106110999).

Almost surely, 2^200212221997 is an apocalyptic number.

It is an amenable number.

200212221997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212221997 is an equidigital number, since it uses as much as digits as its factorization.

200212221997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

Adding to 200212221997 its reverse (799122212002), we get a palindrome (999334433999).

The spelling of 200212221997 in words is "two hundred billion, two hundred twelve million, two hundred twenty-one thousand, nine hundred ninety-seven".