22222012 has 12 divisors (see below), whose sum is σ = 38928736. Its totient is φ = 11099520.

The previous prime is 22221977. The next prime is 22222049. The reversal of 22222012 is 21022222.

It is a junction number, because it is equal to n+sod(n) for n = 22221983 and 22222001.

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, 2668 + ... + 7180.

Almost surely, 2^22222012 is an apocalyptic number.

It is an amenable number.

22222012 is a deficient number, since it is larger than the sum of its proper divisors (16706724).

22222012 is a wasteful number, since it uses less digits than its factorization.

22222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748 (or 5746 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22222012 is about 4714.0229104237. The cubic root of 22222012 is about 281.1433352230.

Adding to 22222012 its reverse (21022222), we get a palindrome (43244234).

The spelling of 22222012 in words is "twenty-two million, two hundred twenty-two thousand, twelve".