42222111 has 16 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 27413120.

The previous prime is 42222107. The next prime is 42222119. The reversal of 42222111 is 11122224.

It is a cyclic number.

It is not a de Polignac number, because 42222111 - 2² = 42222107 is a prime.

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 (42222119) 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, 18946 + ... + 21056.

It is an arithmetic number, because the mean of its divisors is an integer number (3611520).

Almost surely, 2^42222111 is an apocalyptic number.

42222111 is a deficient number, since it is larger than the sum of its proper divisors (15562209).

42222111 is a wasteful number, since it uses less digits than its factorization.

42222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its digits is 64, while the sum is 15.

The square root of 42222111 is about 6497.8543381643. The cubic root of 42222111 is about 348.2143365169.

Adding to 42222111 its reverse (11122224), we get a palindrome (53344335).

The spelling of 42222111 in words is "forty-two million, two hundred twenty-two thousand, one hundred eleven".