12271491122 has 18 divisors (see below), whose sum is σ = 20235589437. Its totient is φ = 5577167200.

The previous prime is 12271491121. The next prime is 12271491163. The reversal of 12271491122 is 22119417221.

It can be written as a sum of positive squares in 2 ways, for example, as 7960386841 + 4311104281 = 89221^2 + 65659^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78331.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12271491121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1719722 + ... + 1726842.

Almost surely, 2^12271491122 is an apocalyptic number.

12271491122 is a deficient number, since it is larger than the sum of its proper divisors (7964098315).

12271491122 is an frugal number, since it uses more digits than its factorization.

12271491122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266 (or 7134 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

Multiplying 12271491122 by its sum of digits (32), we get a square (392687715904 = 626648²).

The spelling of 12271491122 in words is "twelve billion, two hundred seventy-one million, four hundred ninety-one thousand, one hundred twenty-two".