11111091003 has 20 divisors (see below), whose sum is σ = 16600915408. Its totient is φ = 7406115120.

The previous prime is 11111090981. The next prime is 11111091011. The reversal of 11111091003 is 30019011111.

It is not a de Polignac number, because 11111091003 - 2⁸ = 11111090747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111091203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 810738 + ... + 824328.

Almost surely, 2^11111091003 is an apocalyptic number.

11111091003 is a deficient number, since it is larger than the sum of its proper divisors (5489824405).

11111091003 is a wasteful number, since it uses less digits than its factorization.

11111091003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23696 (or 23687 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 18.

The spelling of 11111091003 in words is "eleven billion, one hundred eleven million, ninety-one thousand, three".