22004022012 has 48 divisors (see below), whose sum is σ = 62129007360. Its totient is φ = 5917047552.

The previous prime is 22004021987. The next prime is 22004022059. The reversal of 22004022012 is 21022040022.

It is a junction number, because it is equal to n+sod(n) for n = 22004021982 and 22004022000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7703062 + ... + 7705917.

It is an arithmetic number, because the mean of its divisors is an integer number (1294354320).

Almost surely, 2^22004022012 is an apocalyptic number.

It is an amenable number.

22004022012 is an abundant number, since it is smaller than the sum of its proper divisors (40124985348).

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

22004022012 is a wasteful number, since it uses less digits than its factorization.

22004022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15409010 (or 15409008 counting only the distinct ones).

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

Adding to 22004022012 its reverse (21022040022), we get a palindrome (43026062034).

The spelling of 22004022012 in words is "twenty-two billion, four million, twenty-two thousand, twelve".