12212431409 has 2 divisors, whose sum is σ = 12212431410. Its totient is φ = 12212431408.

The previous prime is 12212431391. The next prime is 12212431433. The reversal of 12212431409 is 90413421221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7237245184 + 4975186225 = 85072^2 + 70535^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212431409 - 2¹⁶ = 12212365873 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212451409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106215704 + 6106215705.

It is an arithmetic number, because the mean of its divisors is an integer number (6106215705).

Almost surely, 2^12212431409 is an apocalyptic number.

It is an amenable number.

12212431409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212431409 is an equidigital number, since it uses as much as digits as its factorization.

12212431409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 12212431409 in words is "twelve billion, two hundred twelve million, four hundred thirty-one thousand, four hundred nine".