22422012 has 12 divisors (see below), whose sum is σ = 52318056. Its totient is φ = 7474000.

The previous prime is 22422007. The next prime is 22422041. The reversal of 22422012 is 21022422.

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 = 22421982 and 22422000.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 934239 + ... + 934262.

It is an arithmetic number, because the mean of its divisors is an integer number (4359838).

Almost surely, 2^22422012 is an apocalyptic number.

It is an amenable number.

22422012 is an abundant number, since it is smaller than the sum of its proper divisors (29896044).

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

22422012 is a wasteful number, since it uses less digits than its factorization.

22422012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868508 (or 1868506 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22422012 is about 4735.1886974016. The cubic root of 22422012 is about 281.9842554461.

Adding to 22422012 its reverse (21022422), we get a palindrome (43444434).

The spelling of 22422012 in words is "twenty-two million, four hundred twenty-two thousand, twelve".