1111001103 has 14 divisors (see below), whose sum is σ = 1665740744. Its totient is φ = 740666916.

The previous prime is 1111001053. The next prime is 1111001141. The reversal of 1111001103 is 3011001111.

It is not a de Polignac number, because 1111001103 - 2¹² = 1110997007 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 (1111002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 761275 + ... + 762732.

Almost surely, 2^1111001103 is an apocalyptic number.

1111001103 is a deficient number, since it is larger than the sum of its proper divisors (554739641).

1111001103 is an frugal number, since it uses more digits than its factorization.

1111001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524025 (or 1524010 counting only the distinct ones).

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

The square root of 1111001103 is about 33331.6831708211. The cubic root of 1111001103 is about 1035.7099854453.

Adding to 1111001103 its reverse (3011001111), we get a palindrome (4122002214).

The spelling of 1111001103 in words is "one billion, one hundred eleven million, one thousand, one hundred three".