211122210012111 has 24 divisors (see below), whose sum is σ = 316297265179584. Its totient is φ = 135588253665600.

The previous prime is 211122210012071. The next prime is 211122210012169. The reversal of 211122210012111 is 111210012221112.

It is a happy number.

211122210012111 is a `hidden beast` number, since 211 + 1 + 222 + 100 + 121 + 11 = 666.

211122210012111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211122210012111 - 2⁷ = 211122210011983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122210012011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3138583351 + ... + 3138650616.

It is an arithmetic number, because the mean of its divisors is an integer number (13179052715816).

Almost surely, 2^{211122210012111} is an apocalyptic number.

211122210012111 is a deficient number, since it is larger than the sum of its proper divisors (105175055167473).

211122210012111 is a wasteful number, since it uses less digits than its factorization.

211122210012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277234111 (or 6277234108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211122210012111 its reverse (111210012221112), we get a palindrome (322332222233223).

The spelling of 211122210012111 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred ten million, twelve thousand, one hundred eleven".