11111211001903 has 2 divisors, whose sum is σ = 11111211001904. Its totient is φ = 11111211001902.

The previous prime is 11111211001901. The next prime is 11111211002051. The reversal of 11111211001903 is 30910011211111.

It is a weak prime.

It is an emirp because it is prime and its reverse (30910011211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11111211001903 - 2¹ = 11111211001901 is a prime.

Together with 11111211001901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111211001901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555605500951 + 5555605500952.

It is an arithmetic number, because the mean of its divisors is an integer number (5555605500952).

Almost surely, 2^{11111211001903} is an apocalyptic number.

11111211001903 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111211001903 is an equidigital number, since it uses as much as digits as its factorization.

11111211001903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 22.

The spelling of 11111211001903 in words is "eleven trillion, one hundred eleven billion, two hundred eleven million, one thousand, nine hundred three".