12126227913 has 6 divisors (see below), whose sum is σ = 17515662554. Its totient is φ = 8084151936.

The previous prime is 12126227851. The next prime is 12126227917. The reversal of 12126227913 is 31972262121.

12126227913 is a `hidden beast` number, since 1 + 2 + 12 + 622 + 7 + 9 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6242264064 + 5883963849 = 79008^2 + 76707^2 .

It is not a de Polignac number, because 12126227913 - 2⁹ = 12126227401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12126227917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673679320 + ... + 673679337.

Almost surely, 2^12126227913 is an apocalyptic number.

It is an amenable number.

12126227913 is a deficient number, since it is larger than the sum of its proper divisors (5389434641).

12126227913 is a wasteful number, since it uses less digits than its factorization.

12126227913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347358663 (or 1347358660 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The spelling of 12126227913 in words is "twelve billion, one hundred twenty-six million, two hundred twenty-seven thousand, nine hundred thirteen".