22002012312 has 64 divisors (see below), whose sum is σ = 66171475200. Its totient is φ = 5955431040.

The previous prime is 22002012311. The next prime is 22002012353. The reversal of 22002012312 is 21321020022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22002012291 and 22002012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002012311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3443239 + ... + 3449622.

It is an arithmetic number, because the mean of its divisors is an integer number (1033929300).

Almost surely, 2^22002012312 is an apocalyptic number.

It is an amenable number.

22002012312 is an abundant number, since it is smaller than the sum of its proper divisors (44169462888).

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

22002012312 is a wasteful number, since it uses less digits than its factorization.

22002012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6892896 (or 6892892 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22002012312 its reverse (21321020022), we get a palindrome (43323032334).

The spelling of 22002012312 in words is "twenty-two billion, two million, twelve thousand, three hundred twelve".