201200211997 has 2 divisors, whose sum is σ = 201200211998. Its totient is φ = 201200211996.

The previous prime is 201200211983. The next prime is 201200212001. The reversal of 201200211997 is 799112002102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135137847321 + 66062364676 = 367611^2 + 257026^2 .

It is a cyclic number.

It is not a de Polignac number, because 201200211997 - 2¹¹ = 201200209949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201200211907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600105998 + 100600105999.

It is an arithmetic number, because the mean of its divisors is an integer number (100600105999).

Almost surely, 2^201200211997 is an apocalyptic number.

It is an amenable number.

201200211997 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200211997 is an equidigital number, since it uses as much as digits as its factorization.

201200211997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 201200211997 in words is "two hundred one billion, two hundred million, two hundred eleven thousand, nine hundred ninety-seven".