211422 has 16 divisors (see below), whose sum is σ = 427392. Its totient is φ = 69720.

The previous prime is 211403. The next prime is 211427. The reversal of 211422 is 224112.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 211398 and 211407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 211422.

It is not an unprimeable number, because it can be changed into a prime (211427) by changing a digit.

211422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897 + ... + 1107.

It is an arithmetic number, because the mean of its divisors is an integer number (26712).

2²¹¹⁴²² is an apocalyptic number.

211422 is an abundant number, since it is smaller than the sum of its proper divisors (215970).

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

211422 is a wasteful number, since it uses less digits than its factorization.

211422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its digits is 32, while the sum is 12.

The square root of 211422 is about 459.8064810331. The cubic root of 211422 is about 59.5730806469.

Adding to 211422 its reverse (224112), we get a palindrome (435534).

The spelling of 211422 in words is "two hundred eleven thousand, four hundred twenty-two", and thus it is an iban number.