10213204909 has 2 divisors, whose sum is σ = 10213204910. Its totient is φ = 10213204908.

The previous prime is 10213204871. The next prime is 10213204927. The reversal of 10213204909 is 90940231201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9637348900 + 575856009 = 98170^2 + 23997^2 .

It is a cyclic number.

It is not a de Polignac number, because 10213204909 - 2²³ = 10204816301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10213204009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106602454 + 5106602455.

It is an arithmetic number, because the mean of its divisors is an integer number (5106602455).

Almost surely, 2^10213204909 is an apocalyptic number.

It is an amenable number.

10213204909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10213204909 is an equidigital number, since it uses as much as digits as its factorization.

10213204909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 10213204909 in words is "ten billion, two hundred thirteen million, two hundred four thousand, nine hundred nine".