22712012 has 6 divisors (see below), whose sum is σ = 39746028.
Its totient is φ = 11356004.
The previous prime is 22711981. The next prime is 22712021. The reversal of 22712012 is 21021722.
Adding to 22712012 its reverse (21021722), we get a palindrome (43733734).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2838998 + ... + 2839005.
It is an arithmetic number, because the mean of its divisors is an integer number (6624338).
Almost surely, 222712012 is an apocalyptic number.
It is an amenable number.
22712012 is a deficient number, since it is larger than the sum of its proper divisors (17034016).
22712012 is a wasteful number, since it uses less digits than its factorization.
22712012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5678007 (or 5678005 counting only the distinct ones).
The product of its (nonzero) digits is 112, while the sum is 17.
The square root of 22712012 is about 4765.7121188758.
The cubic root of 22712012 is about 283.1947532995.
The spelling of 22712012 in words is "twenty-two million, seven hundred twelve thousand, twelve".