211022221122 has 48 divisors (see below), whose sum is σ = 473003851320. Its totient is φ = 67945632000.

The previous prime is 211022221099. The next prime is 211022221141. The reversal of 211022221122 is 221122220112.

It is a happy number.

211022221122 is a `hidden beast` number, since 211 + 0 + 222 + 211 + 22 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 157665379041 + 53356842081 = 397071^2 + 230991^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211022221095 and 211022221104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1340997 + ... + 1490072.

Almost surely, 2^211022221122 is an apocalyptic number.

211022221122 is an abundant number, since it is smaller than the sum of its proper divisors (261981630198).

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

211022221122 is a wasteful number, since it uses less digits than its factorization.

211022221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831219 (or 2831216 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211022221122 its reverse (221122220112), we get a palindrome (432144441234).

The spelling of 211022221122 in words is "two hundred eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".