12213401009 has 2 divisors, whose sum is σ = 12213401010. Its totient is φ = 12213401008.

The previous prime is 12213400973. The next prime is 12213401021. The reversal of 12213401009 is 90010431221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8878915984 + 3334485025 = 94228^2 + 57745^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213401009 - 2⁸ = 12213400753 is a prime.

It is not a weakly prime, because it can be changed into another prime (12213401099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106700504 + 6106700505.

It is an arithmetic number, because the mean of its divisors is an integer number (6106700505).

Almost surely, 2^12213401009 is an apocalyptic number.

It is an amenable number.

12213401009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213401009 is an equidigital number, since it uses as much as digits as its factorization.

12213401009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 12213401009 in words is "twelve billion, two hundred thirteen million, four hundred one thousand, nine".