1001111103 has 8 divisors (see below), whose sum is σ = 1483127600. Its totient is φ = 667407384.

The previous prime is 1001111099. The next prime is 1001111107. The reversal of 1001111103 is 3011111001.

It is an interprime number because it is at equal distance from previous prime (1001111099) and next prime (1001111107).

It is not a de Polignac number, because 1001111103 - 2² = 1001111099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18539068 + ... + 18539121.

It is an arithmetic number, because the mean of its divisors is an integer number (185390950).

Almost surely, 2^1001111103 is an apocalyptic number.

1001111103 is a deficient number, since it is larger than the sum of its proper divisors (482016497).

1001111103 is an equidigital number, since it uses as much as digits as its factorization.

1001111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37078198 (or 37078192 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 1001111103 is about 31640.3398053814. The cubic root of 1001111103 is about 1000.3702305791.

Adding to 1001111103 its reverse (3011111001), we get a palindrome (4012222104).

The spelling of 1001111103 in words is "one billion, one million, one hundred eleven thousand, one hundred three".