22221112 has 16 divisors (see below), whose sum is σ = 41724000.
Its totient is φ = 11094720.
The previous prime is 22221109. The next prime is 22221161. The reversal of 22221112 is 21112222.
Adding to 22221112 its reverse (21112222), we get a palindrome (43333334).
It can be divided in two parts, 222 and 21112, that multiplied together give a palindrome (4686864).
It is a happy number.
It is a nude number because it is divisible by every one of its digits.
It is a pancake number, because a pancake can be divided into 22221112 parts by 6666 straight cuts.
It is a junction number, because it is equal to n+sod(n) for n = 22221092 and 22221101.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764 + ... + 8812.
It is an arithmetic number, because the mean of its divisors is an integer number (2607750).
Almost surely, 222221112 is an apocalyptic number.
It is an amenable number.
22221112 is a deficient number, since it is larger than the sum of its proper divisors (19502888).
22221112 is a wasteful number, since it uses less digits than its factorization.
22221112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3966 (or 3962 counting only the distinct ones).
The product of its digits is 32, while the sum is 13.
The square root of 22221112 is about 4713.9274495902.
The cubic root of 22221112 is about 281.1395397008.
The spelling of 22221112 in words is "twenty-two million, two hundred twenty-one thousand, one hundred twelve".