210111110122201 has 12 divisors (see below), whose sum is σ = 227217477164580. Its totient is φ = 194045642917280.

The previous prime is 210111110122181. The next prime is 210111110122219. The reversal of 210111110122201 is 102221011111012.

It can be written as a sum of positive squares in 2 ways, for example, as 38246246766025 + 171864863356176 = 6184355^2 + 13109724^2 .

It is not a de Polignac number, because 210111110122201 - 2⁵ = 210111110122169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210111110129201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6848009890 + ... + 6848040571.

It is an arithmetic number, because the mean of its divisors is an integer number (18934789763715).

Almost surely, 2^{210111110122201} is an apocalyptic number.

It is an amenable number.

210111110122201 is a deficient number, since it is larger than the sum of its proper divisors (17106367042379).

210111110122201 is a wasteful number, since it uses less digits than its factorization.

210111110122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13696050536 (or 13696050513 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210111110122201 its reverse (102221011111012), we get a palindrome (312332121233213).

The spelling of 210111110122201 in words is "two hundred ten trillion, one hundred eleven billion, one hundred ten million, one hundred twenty-two thousand, two hundred one".