22203123312 has 80 divisors (see below), whose sum is σ = 57983614208. Its totient is φ = 7320499200.

The previous prime is 22203123259. The next prime is 22203123391. The reversal of 22203123312 is 21332130222.

It is a happy number.

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, 5194008 + ... + 5198280.

Almost surely, 2^22203123312 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 22203123312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28991807104).

22203123312 is an abundant number, since it is smaller than the sum of its proper divisors (35780490896).

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

22203123312 is a wasteful number, since it uses less digits than its factorization.

22203123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22203123312 its reverse (21332130222), we get a palindrome (43535253534).

The spelling of 22203123312 in words is "twenty-two billion, two hundred three million, one hundred twenty-three thousand, three hundred twelve".