1223385901919 has 2 divisors, whose sum is σ = 1223385901920. Its totient is φ = 1223385901918.

The previous prime is 1223385901909. The next prime is 1223385901937. The reversal of 1223385901919 is 9191095833221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223385901919 is a prime.

It is a super-2 number, since 2×1223385901919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223385901909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611692950959 + 611692950960.

It is an arithmetic number, because the mean of its divisors is an integer number (611692950960).

Almost surely, 2^{1223385901919} is an apocalyptic number.

1223385901919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223385901919 is an equidigital number, since it uses as much as digits as its factorization.

1223385901919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 1223385901919 in words is "one trillion, two hundred twenty-three billion, three hundred eighty-five million, nine hundred one thousand, nine hundred nineteen".