12305550222 has 144 divisors (see below), whose sum is σ = 33774483600. Its totient is φ = 3215842560.

The previous prime is 12305550221. The next prime is 12305550253. The reversal of 12305550222 is 22205550321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305550221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 473322 + ... + 498642.

It is an arithmetic number, because the mean of its divisors is an integer number (234545025).

Almost surely, 2^12305550222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12305550222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16887241800).

12305550222 is an abundant number, since it is smaller than the sum of its proper divisors (21468933378).

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

12305550222 is a wasteful number, since it uses less digits than its factorization.

12305550222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25391 (or 25381 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Subtracting 12305550222 from its reverse (22205550321), we obtain a palindrome (9900000099).

The spelling of 12305550222 in words is "twelve billion, three hundred five million, five hundred fifty thousand, two hundred twenty-two".