12265442226 has 64 divisors (see below), whose sum is σ = 27575976960. Its totient is φ = 4040686080.

The previous prime is 12265442219. The next prime is 12265442257. The reversal of 12265442226 is 62224456221.

12265442226 is a `hidden beast` number, since 1 + 226 + 5 + 4 + 422 + 2 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5556415 + ... + 5558621.

It is an arithmetic number, because the mean of its divisors is an integer number (430874640).

Almost surely, 2^12265442226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12265442226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13787988480).

12265442226 is an abundant number, since it is smaller than the sum of its proper divisors (15310534734).

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

12265442226 is a wasteful number, since it uses less digits than its factorization.

12265442226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376 (or 3370 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 12265442226 its reverse (62224456221), we get a palindrome (74489898447).

The spelling of 12265442226 in words is "twelve billion, two hundred sixty-five million, four hundred forty-two thousand, two hundred twenty-six".