11003102021 has 4 divisors (see below), whose sum is σ = 11010072000. Its totient is φ = 10996132044.

The previous prime is 11003101969. The next prime is 11003102053. The reversal of 11003102021 is 12020130011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11003102021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11003101993 and 11003102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003102921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3482621 + ... + 3485778.

It is an arithmetic number, because the mean of its divisors is an integer number (2752518000).

Almost surely, 2^11003102021 is an apocalyptic number.

It is an amenable number.

11003102021 is a deficient number, since it is larger than the sum of its proper divisors (6969979).

11003102021 is an equidigital number, since it uses as much as digits as its factorization.

11003102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969978.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11003102021 its reverse (12020130011), we get a palindrome (23023232032).

The spelling of 11003102021 in words is "eleven billion, three million, one hundred two thousand, twenty-one".