22022222012 has 12 divisors (see below), whose sum is σ = 44044444080. Its totient is φ = 9438095136.

The previous prime is 22022221987. The next prime is 22022222017. The reversal of 22022222012 is 21022222022.

22022222012 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022222017) by changing a digit.

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, 393253937 + ... + 393253992.

It is an arithmetic number, because the mean of its divisors is an integer number (3670370340).

Almost surely, 2^22022222012 is an apocalyptic number.

It is an amenable number.

22022222012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22022222012 is a wasteful number, since it uses less digits than its factorization.

22022222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786507940 (or 786507938 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22022222012 its reverse (21022222022), we get a palindrome (43044444034).

The spelling of 22022222012 in words is "twenty-two billion, twenty-two million, two hundred twenty-two thousand, twelve".