42222211 has 4 divisors (see below), whose sum is σ = 42323400.
Its totient is φ = 42121024.
The previous prime is 42222139. The next prime is 42222221. The reversal of 42222211 is 11222224.
Adding to 42222211 its reverse (11222224), we get a palindrome (53444435).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 42222211 - 213 = 42214019 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (42222221) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49966 + ... + 50803.
It is an arithmetic number, because the mean of its divisors is an integer number (10580850).
Almost surely, 242222211 is an apocalyptic number.
42222211 is a deficient number, since it is larger than the sum of its proper divisors (101189).
42222211 is a wasteful number, since it uses less digits than its factorization.
42222211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 101188.
The product of its digits is 128, while the sum is 16.
The square root of 42222211 is about 6497.8620330075.
The cubic root of 42222211 is about 348.2146114235.
The spelling of 42222211 in words is "forty-two million, two hundred twenty-two thousand, two hundred eleven".