1111321202309 has 2 divisors, whose sum is σ = 1111321202310. Its totient is φ = 1111321202308.

The previous prime is 1111321202297. The next prime is 1111321202311. The reversal of 1111321202309 is 9032021231111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668597311684 + 442723890625 = 817678^2 + 665375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111321202309 is a prime.

Together with 1111321202311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111321202009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555660601154 + 555660601155.

It is an arithmetic number, because the mean of its divisors is an integer number (555660601155).

Almost surely, 2^{1111321202309} is an apocalyptic number.

It is an amenable number.

1111321202309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111321202309 is an equidigital number, since it uses as much as digits as its factorization.

1111321202309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 1111321202309 in words is "one trillion, one hundred eleven billion, three hundred twenty-one million, two hundred two thousand, three hundred nine".