211122011022 has 64 divisors (see below), whose sum is σ = 467749719360. Its totient is φ = 63113011200.

The previous prime is 211122011017. The next prime is 211122011047. The reversal of 211122011022 is 220110221112.

It is a junction number, because it is equal to n+sod(n) for n = 211122010992 and 211122011010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633754 + ... + 907682.

It is an arithmetic number, because the mean of its divisors is an integer number (7308589365).

Almost surely, 2^211122011022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211122011022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233874859680).

211122011022 is an abundant number, since it is smaller than the sum of its proper divisors (256627708338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211122011022 is a wasteful number, since it uses less digits than its factorization.

211122011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274229.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211122011022 its reverse (220110221112), we get a palindrome (431232232134).

The spelling of 211122011022 in words is "two hundred eleven billion, one hundred twenty-two million, eleven thousand, twenty-two".