422111111 has 16 divisors (see below), whose sum is σ = 448113600. Its totient is φ = 396811008.

The previous prime is 422111099. The next prime is 422111119. The reversal of 422111111 is 111111224.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422111111 is a prime.

422111111 is a modest number, since divided by 11111 gives 4221 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422111119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342845 + ... + 344073.

It is an arithmetic number, because the mean of its divisors is an integer number (28007100).

Almost surely, 2^422111111 is an apocalyptic number.

422111111 is a deficient number, since it is larger than the sum of its proper divisors (26002489).

422111111 is a wasteful number, since it uses less digits than its factorization.

With its successor (422111112) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1498).

422111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498.

The product of its digits is 16, while the sum is 14.

The square root of 422111111 is about 20545.3428056093. The cubic root of 422111111 is about 750.1398915352.

Adding to 422111111 its reverse (111111224), we get a palindrome (533222335).

The spelling of 422111111 in words is "four hundred twenty-two million, one hundred eleven thousand, one hundred eleven".