211201200997 has 2 divisors, whose sum is σ = 211201200998. Its totient is φ = 211201200996.

The previous prime is 211201200967. The next prime is 211201201009. The reversal of 211201200997 is 799002102112.

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., 182528890756 + 28672310241 = 427234^2 + 169329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211201200997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211201200967) 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, 105600600498 + 105600600499.

It is an arithmetic number, because the mean of its divisors is an integer number (105600600499).

Almost surely, 2^211201200997 is an apocalyptic number.

It is an amenable number.

211201200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201200997 is an equidigital number, since it uses as much as digits as its factorization.

211201200997 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 211201200997 in words is "two hundred eleven billion, two hundred one million, two hundred thousand, nine hundred ninety-seven".