11103203001 has 32 divisors (see below), whose sum is σ = 16718284800. Its totient is φ = 6492790080.

The previous prime is 11103202973. The next prime is 11103203021. The reversal of 11103203001 is 10030230111.

It is a de Polignac number, because none of the positive numbers 2^k-11103203001 is a prime.

It is a super-2 number, since 2×11103203001² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11103203021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1898640 + ... + 1904478.

It is an arithmetic number, because the mean of its divisors is an integer number (522446400).

Almost surely, 2^11103203001 is an apocalyptic number.

11103203001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11103203001 is a deficient number, since it is larger than the sum of its proper divisors (5615081799).

11103203001 is a wasteful number, since it uses less digits than its factorization.

11103203001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7869.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 11103203001 its reverse (10030230111), we get a palindrome (21133433112).

The spelling of 11103203001 in words is "eleven billion, one hundred three million, two hundred three thousand, one".