22543342212 has 96 divisors (see below), whose sum is σ = 54904711680. Its totient is φ = 7190346240.

The previous prime is 22543342193. The next prime is 22543342223. The reversal of 22543342212 is 21224334522.

It is a self number, because there is not a number n which added to its sum of digits gives 22543342212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29163058 + ... + 29163830.

It is an arithmetic number, because the mean of its divisors is an integer number (571924080).

Almost surely, 2^22543342212 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 22543342212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27452355840).

22543342212 is an abundant number, since it is smaller than the sum of its proper divisors (32361369468).

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

22543342212 is a wasteful number, since it uses less digits than its factorization.

22543342212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1451 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

Adding to 22543342212 its reverse (21224334522), we get a palindrome (43767676734).

The spelling of 22543342212 in words is "twenty-two billion, five hundred forty-three million, three hundred forty-two thousand, two hundred twelve".