12242020409 has 2 divisors, whose sum is σ = 12242020410. Its totient is φ = 12242020408.

The previous prime is 12242020403. The next prime is 12242020451. The reversal of 12242020409 is 90402024221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10521015184 + 1721005225 = 102572^2 + 41485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12242020409 is a prime.

It is not a weakly prime, because it can be changed into another prime (12242020403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121010204 + 6121010205.

It is an arithmetic number, because the mean of its divisors is an integer number (6121010205).

Almost surely, 2^12242020409 is an apocalyptic number.

It is an amenable number.

12242020409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12242020409 is an equidigital number, since it uses as much as digits as its factorization.

12242020409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 12242020409 in words is "twelve billion, two hundred forty-two million, twenty thousand, four hundred nine".