210111202221122 has 16 divisors (see below), whose sum is σ = 316418944044600. Its totient is φ = 104638419680640.

The previous prime is 210111202221077. The next prime is 210111202221161. The reversal of 210111202221122 is 221122202111012.

It can be written as a sum of positive squares in 4 ways, for example, as 134193944492521 + 75917257728601 = 11584211^2 + 8713051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210111202221094 and 210111202221103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47586029 + ... + 51813632.

Almost surely, 2^{210111202221122} is an apocalyptic number.

210111202221122 is a deficient number, since it is larger than the sum of its proper divisors (106307741823478).

210111202221122 is a wasteful number, since it uses less digits than its factorization.

210111202221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99403861.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210111202221122 its reverse (221122202111012), we get a palindrome (431233404332134).

The spelling of 210111202221122 in words is "two hundred ten trillion, one hundred eleven billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-two".