12221474009 has 2 divisors, whose sum is σ = 12221474010. Its totient is φ = 12221474008.

The previous prime is 12221473951. The next prime is 12221474017. The reversal of 12221474009 is 90047412221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8500840000 + 3720634009 = 92200^2 + 60997^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221474009 - 2⁸ = 12221473753 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221474509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110737004 + 6110737005.

It is an arithmetic number, because the mean of its divisors is an integer number (6110737005).

Almost surely, 2^12221474009 is an apocalyptic number.

It is an amenable number.

12221474009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221474009 is an equidigital number, since it uses as much as digits as its factorization.

12221474009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 12221474009 in words is "twelve billion, two hundred twenty-one million, four hundred seventy-four thousand, nine".