22122120211 has 4 divisors (see below), whose sum is σ = 22835737024. Its totient is φ = 21408503400.

The previous prime is 22122120197. The next prime is 22122120271. The reversal of 22122120211 is 11202122122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22122120211 - 2¹¹ = 22122118163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122120271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356808360 + ... + 356808421.

It is an arithmetic number, because the mean of its divisors is an integer number (5708934256).

Almost surely, 2^22122120211 is an apocalyptic number.

22122120211 is a deficient number, since it is larger than the sum of its proper divisors (713616813).

22122120211 is an equidigital number, since it uses as much as digits as its factorization.

22122120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713616812.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22122120211 its reverse (11202122122), we get a palindrome (33324242333).

The spelling of 22122120211 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty thousand, two hundred eleven".