22012122211 has 2 divisors, whose sum is σ = 22012122212. Its totient is φ = 22012122210.

The previous prime is 22012122173. The next prime is 22012122227. The reversal of 22012122211 is 11222121022.

It is a happy number.

It is an a-pointer prime, because the next prime (22012122227) can be obtained adding 22012122211 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22012122211 - 2²⁹ = 21475251299 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012122241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006061105 + 11006061106.

It is an arithmetic number, because the mean of its divisors is an integer number (11006061106).

Almost surely, 2^22012122211 is an apocalyptic number.

22012122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012122211 is an equidigital number, since it uses as much as digits as its factorization.

22012122211 is an evil number, because the sum of its binary digits is even.

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

Adding to 22012122211 its reverse (11222121022), we get a palindrome (33234243233).

The spelling of 22012122211 in words is "twenty-two billion, twelve million, one hundred twenty-two thousand, two hundred eleven".