211222202122211 has 16 divisors (see below), whose sum is σ = 247285141403328. Its totient is φ = 176631369446400.

The previous prime is 211222202122181. The next prime is 211222202122237. The reversal of 211222202122211 is 112221202222112.

It is a cyclic number.

It is not a de Polignac number, because 211222202122211 - 2⁶ = 211222202122147 is a prime.

It is a super-2 number, since 2×211222202122211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222202122271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172963691 + ... + 174180603.

It is an arithmetic number, because the mean of its divisors is an integer number (15455321337708).

Almost surely, 2^{211222202122211} is an apocalyptic number.

211222202122211 is a deficient number, since it is larger than the sum of its proper divisors (36062939281117).

211222202122211 is a wasteful number, since it uses less digits than its factorization.

211222202122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821742.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211222202122211 its reverse (112221202222112), we get a palindrome (323443404344323).

Subtracting from 211222202122211 its reverse (112221202222112), we obtain a palindrome (99000999900099).

The spelling of 211222202122211 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred eleven".