1100203312993 has 2 divisors, whose sum is σ = 1100203312994. Its totient is φ = 1100203312992.

The previous prime is 1100203312991. The next prime is 1100203313047. The reversal of 1100203312993 is 3992133020011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 823725053649 + 276478259344 = 907593^2 + 525812^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100203312993 - 2¹ = 1100203312991 is a prime.

Together with 1100203312991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1100203312991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550101656496 + 550101656497.

It is an arithmetic number, because the mean of its divisors is an integer number (550101656497).

Almost surely, 2^{1100203312993} is an apocalyptic number.

It is an amenable number.

1100203312993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100203312993 is an equidigital number, since it uses as much as digits as its factorization.

1100203312993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 1100203312993 in words is "one trillion, one hundred billion, two hundred three million, three hundred twelve thousand, nine hundred ninety-three".