22000323012 has 72 divisors (see below), whose sum is σ = 53589157440. Its totient is φ = 7016486400.

The previous prime is 22000322989. The next prime is 22000323031. The reversal of 22000323012 is 21032300022.

It is a junction number, because it is equal to n+sod(n) for n = 22000322982 and 22000323000.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4441137 + ... + 4446087.

Almost surely, 2^22000323012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22000323012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26794578720).

22000323012 is an abundant number, since it is smaller than the sum of its proper divisors (31588834428).

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

22000323012 is a wasteful number, since it uses less digits than its factorization.

22000323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213 (or 5098 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 22000323012 its reverse (21032300022), we get a palindrome (43032623034).

The spelling of 22000323012 in words is "twenty-two billion, three hundred twenty-three thousand, twelve".