10111213309 has 2 divisors, whose sum is σ = 10111213310. Its totient is φ = 10111213308.

The previous prime is 10111213297. The next prime is 10111213339. The reversal of 10111213309 is 90331211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6115709209 + 3995504100 = 78203^2 + 63210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111213309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10111213309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111213339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055606654 + 5055606655.

It is an arithmetic number, because the mean of its divisors is an integer number (5055606655).

Almost surely, 2^10111213309 is an apocalyptic number.

It is an amenable number.

10111213309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111213309 is an equidigital number, since it uses as much as digits as its factorization.

10111213309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 10111213309 in words is "ten billion, one hundred eleven million, two hundred thirteen thousand, three hundred nine".