210001122197 has 2 divisors, whose sum is σ = 210001122198. Its totient is φ = 210001122196.

The previous prime is 210001122181. The next prime is 210001122223. The reversal of 210001122197 is 791221100012.

It is an a-pointer prime, because the next prime (210001122223) can be obtained adding 210001122197 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130356380401 + 79644741796 = 361049^2 + 282214^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001122197 - 2⁴ = 210001122181 is a prime.

It is a super-2 number, since 2×210001122197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210001124197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000561098 + 105000561099.

It is an arithmetic number, because the mean of its divisors is an integer number (105000561099).

Almost surely, 2^210001122197 is an apocalyptic number.

It is an amenable number.

210001122197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001122197 is an equidigital number, since it uses as much as digits as its factorization.

210001122197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 210001122197 in words is "two hundred ten billion, one million, one hundred twenty-two thousand, one hundred ninety-seven".