22103213312 has 72 divisors (see below), whose sum is σ = 45162621504. Its totient is φ = 10793447424.

The previous prime is 22103213269. The next prime is 22103213317. The reversal of 22103213312 is 21331230122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22103213317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919123 + ... + 1930605.

It is an arithmetic number, because the mean of its divisors is an integer number (627258632).

Almost surely, 2^22103213312 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 22103213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22581310752).

22103213312 is an abundant number, since it is smaller than the sum of its proper divisors (23059408192).

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

22103213312 is a wasteful number, since it uses less digits than its factorization.

22103213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11675 (or 11661 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22103213312 its reverse (21331230122), we get a palindrome (43434443434).

The spelling of 22103213312 in words is "twenty-two billion, one hundred three million, two hundred thirteen thousand, three hundred twelve".