211422011 has 2 divisors, whose sum is σ = 211422012. Its totient is φ = 211422010.

The previous prime is 211422007. The next prime is 211422019. The reversal of 211422011 is 110224112.

It is a happy number.

211422011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211422011 - 2² = 211422007 is a prime.

It is not a weakly prime, because it can be changed into another prime (211422019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105711005 + 105711006.

It is an arithmetic number, because the mean of its divisors is an integer number (105711006).

Almost surely, 2^211422011 is an apocalyptic number.

211422011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211422011 is an equidigital number, since it uses as much as digits as its factorization.

211422011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 211422011 is about 14540.3580079722. The cubic root of 211422011 is about 595.7308168004.

Adding to 211422011 its reverse (110224112), we get a palindrome (321646123).

The spelling of 211422011 in words is "two hundred eleven million, four hundred twenty-two thousand, eleven".