211122022211 has 16 divisors (see below), whose sum is σ = 233368128000. Its totient is φ = 189975823488.

The previous prime is 211122022187. The next prime is 211122022229. The reversal of 211122022211 is 112220221112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122022211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211122022211.

It is not an unprimeable number, because it can be changed into a prime (211122022411) 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, 728090 + ... + 975888.

It is an arithmetic number, because the mean of its divisors is an integer number (14585508000).

Almost surely, 2^211122022211 is an apocalyptic number.

211122022211 is a deficient number, since it is larger than the sum of its proper divisors (22246105789).

211122022211 is a wasteful number, since it uses less digits than its factorization.

211122022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250018.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211122022211 its reverse (112220221112), we get a palindrome (323342243323).

The spelling of 211122022211 in words is "two hundred eleven billion, one hundred twenty-two million, twenty-two thousand, two hundred eleven".