12227309481 has 4 divisors (see below), whose sum is σ = 16303079312. Its totient is φ = 8151539652.

The previous prime is 12227309461. The next prime is 12227309491. The reversal of 12227309481 is 18490372221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12227309481 - 2⁶ = 12227309417 is a prime.

It is a super-2 number, since 2×12227309481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12227309431) 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, 2037884911 + ... + 2037884916.

It is an arithmetic number, because the mean of its divisors is an integer number (4075769828).

Almost surely, 2^12227309481 is an apocalyptic number.

It is an amenable number.

12227309481 is a deficient number, since it is larger than the sum of its proper divisors (4075769831).

12227309481 is an equidigital number, since it uses as much as digits as its factorization.

12227309481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075769830.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 12227309481 in words is "twelve billion, two hundred twenty-seven million, three hundred nine thousand, four hundred eighty-one".