210111200122 has 4 divisors (see below), whose sum is σ = 315166800186. Its totient is φ = 105055600060.

The previous prime is 210111200099. The next prime is 210111200177. The reversal of 210111200122 is 221002111012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140946934041 + 69164266081 = 375429^2 + 262991^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52527800029 + ... + 52527800032.

Almost surely, 2^210111200122 is an apocalyptic number.

210111200122 is a deficient number, since it is larger than the sum of its proper divisors (105055600064).

210111200122 is a wasteful number, since it uses less digits than its factorization.

210111200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105055600063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210111200122 its reverse (221002111012), we get a palindrome (431113311134).

The spelling of 210111200122 in words is "two hundred ten billion, one hundred eleven million, two hundred thousand, one hundred twenty-two".