22017012 has 12 divisors (see below), whose sum is σ = 51373056. Its totient is φ = 7339000.

The previous prime is 22017001. The next prime is 22017043. The reversal of 22017012 is 21071022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22016982 and 22017000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917364 + ... + 917387.

It is an arithmetic number, because the mean of its divisors is an integer number (4281088).

Almost surely, 2^22017012 is an apocalyptic number.

It is an amenable number.

22017012 is an abundant number, since it is smaller than the sum of its proper divisors (29356044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22017012 is a wasteful number, since it uses less digits than its factorization.

22017012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834758 (or 1834756 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 22017012 is about 4692.2288946726. The cubic root of 22017012 is about 280.2761391436.

Adding to 22017012 its reverse (21071022), we get a palindrome (43088034).

The spelling of 22017012 in words is "twenty-two million, seventeen thousand, twelve".