210111002197 has 2 divisors, whose sum is σ = 210111002198. Its totient is φ = 210111002196.

The previous prime is 210111002191. The next prime is 210111002201. The reversal of 210111002197 is 791200111012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199607007076 + 10503995121 = 446774^2 + 102489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210111002197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210111002191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055501098 + 105055501099.

It is an arithmetic number, because the mean of its divisors is an integer number (105055501099).

Almost surely, 2^210111002197 is an apocalyptic number.

It is an amenable number.

210111002197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111002197 is an equidigital number, since it uses as much as digits as its factorization.

210111002197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 210111002197 in words is "two hundred ten billion, one hundred eleven million, two thousand, one hundred ninety-seven".