210111222122122 has 8 divisors (see below), whose sum is σ = 318287296878372. Its totient is φ = 104015456496000.

The previous prime is 210111222122119. The next prime is 210111222122141. The reversal of 210111222122122 is 221221222111012.

It can be written as a sum of positive squares in 2 ways, for example, as 174060816490521 + 36050405631601 = 13193211^2 + 6004199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 210111222122093 and 210111222122102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520077282279 + ... + 520077282682.

Almost surely, 2^{210111222122122} is an apocalyptic number.

210111222122122 is a deficient number, since it is larger than the sum of its proper divisors (108176074756250).

210111222122122 is a wasteful number, since it uses less digits than its factorization.

210111222122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040154565064.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 210111222122122 its reverse (221221222111012), we get a palindrome (431332444233134).

The spelling of 210111222122122 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".