424222111 has 2 divisors, whose sum is σ = 424222112. Its totient is φ = 424222110.

The previous prime is 424222109. The next prime is 424222129. The reversal of 424222111 is 111222424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424222111 - 2¹ = 424222109 is a prime.

It is a super-2 number, since 2×424222111² = 359928798922592642, which contains 22 as substring.

Together with 424222109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424222171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212111055 + 212111056.

It is an arithmetic number, because the mean of its divisors is an integer number (212111056).

Almost surely, 2^424222111 is an apocalyptic number.

424222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

424222111 is an equidigital number, since it uses as much as digits as its factorization.

424222111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 19.

The square root of 424222111 is about 20596.6529076935. The cubic root of 424222111 is about 751.3883091372.

Adding to 424222111 its reverse (111222424), we get a palindrome (535444535).

The spelling of 424222111 in words is "four hundred twenty-four million, two hundred twenty-two thousand, one hundred eleven".