12272222464 has 36 divisors (see below), whose sum is σ = 25286732800. Its totient is φ = 5938168320.

The previous prime is 12272222399. The next prime is 12272222467. The reversal of 12272222464 is 46422227221.

It is not an unprimeable number, because it can be changed into a prime (12272222467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765264 + ... + 781135.

Almost surely, 2^12272222464 is an apocalyptic number.

It is an amenable number.

12272222464 is an abundant number, since it is smaller than the sum of its proper divisors (13014510336).

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

12272222464 is an equidigital number, since it uses as much as digits as its factorization.

12272222464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546446 (or 1546432 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

Adding to 12272222464 its reverse (46422227221), we get a palindrome (58694449685).

The spelling of 12272222464 in words is "twelve billion, two hundred seventy-two million, two hundred twenty-two thousand, four hundred sixty-four".