211422211 has 54 divisors (see below), whose sum is σ = 294112476. Its totient is φ = 151351200.

The previous prime is 211422203. The next prime is 211422221. The reversal of 211422211 is 112224112.

It is not a de Polignac number, because 211422211 - 2³ = 211422203 is a prime.

It is a super-4 number, since 4×211422211⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (211422221) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1001896 + ... + 1002106.

Almost surely, 2^211422211 is an apocalyptic number.

211422211 is a deficient number, since it is larger than the sum of its proper divisors (82690265).

211422211 is a wasteful number, since it uses less digits than its factorization.

211422211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 242 counting only the distinct ones).

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

The square root of 211422211 is about 14540.3648853803. The cubic root of 211422211 is about 595.7310046493.

Adding to 211422211 its reverse (112224112), we get a palindrome (323646323).

The spelling of 211422211 in words is "two hundred eleven million, four hundred twenty-two thousand, two hundred eleven".