22420012 has 12 divisors (see below), whose sum is σ = 39273976. Its totient is φ = 11198880.

The previous prime is 22420003. The next prime is 22420033. The reversal of 22420012 is 21002422.

It is a junction number, because it is equal to n+sod(n) for n = 22419974 and 22420001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163 + ... + 7405.

Almost surely, 2^22420012 is an apocalyptic number.

It is an amenable number.

22420012 is a deficient number, since it is larger than the sum of its proper divisors (16853964).

22420012 is a wasteful number, since it uses less digits than its factorization.

22420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568 (or 5566 counting only the distinct ones).

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

The square root of 22420012 is about 4734.9775078663. The cubic root of 22420012 is about 281.9758710472.

Adding to 22420012 its reverse (21002422), we get a palindrome (43422434).

The spelling of 22420012 in words is "twenty-two million, four hundred twenty thousand, twelve".