213222271 has 2 divisors, whose sum is σ = 213222272. Its totient is φ = 213222270.

The previous prime is 213222227. The next prime is 213222287. The reversal of 213222271 is 172222312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213222271 - 2²⁷ = 79004543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213222571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106611135 + 106611136.

It is an arithmetic number, because the mean of its divisors is an integer number (106611136).

Almost surely, 2^213222271 is an apocalyptic number.

213222271 is a deficient number, since it is larger than the sum of its proper divisors (1).

213222271 is an equidigital number, since it uses as much as digits as its factorization.

213222271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 213222271 is about 14602.1324127677. The cubic root of 213222271 is about 597.4169241943.

Adding to 213222271 its reverse (172222312), we get a palindrome (385444583).

The spelling of 213222271 in words is "two hundred thirteen million, two hundred twenty-two thousand, two hundred seventy-one".