11111223456803 has 2 divisors, whose sum is σ = 11111223456804. Its totient is φ = 11111223456802.

The previous prime is 11111223456769. The next prime is 11111223456961. The reversal of 11111223456803 is 30865432211111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111223456803 - 2¹⁴ = 11111223440419 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111223456103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555611728401 + 5555611728402.

It is an arithmetic number, because the mean of its divisors is an integer number (5555611728402).

Almost surely, 2^{11111223456803} is an apocalyptic number.

11111223456803 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111223456803 is an equidigital number, since it uses as much as digits as its factorization.

11111223456803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

Adding to 11111223456803 its reverse (30865432211111), we get a palindrome (41976655667914).

The spelling of 11111223456803 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-three million, four hundred fifty-six thousand, eight hundred three".