11003103021 has 16 divisors (see below), whose sum is σ = 14788008000. Its totient is φ = 7276925568.

The previous prime is 11003103011. The next prime is 11003103037. The reversal of 11003103021 is 12030130011.

It is not a de Polignac number, because 11003103021 - 2³¹ = 8855619373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11003102988 and 11003103006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003103011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346410 + ... + 376836.

It is an arithmetic number, because the mean of its divisors is an integer number (924250500).

Almost surely, 2^11003103021 is an apocalyptic number.

It is an amenable number.

11003103021 is a deficient number, since it is larger than the sum of its proper divisors (3784904979).

11003103021 is a wasteful number, since it uses less digits than its factorization.

11003103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31388.

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

Adding to 11003103021 its reverse (12030130011), we get a palindrome (23033233032).

The spelling of 11003103021 in words is "eleven billion, three million, one hundred three thousand, twenty-one".