11103123021 has 8 divisors (see below), whose sum is σ = 14810223744. Its totient is φ = 7399052160.

The previous prime is 11103122993. The next prime is 11103123049. The reversal of 11103123021 is 12032130111.

It is a happy number.

11103123021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11103122993) and next prime (11103123049).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11103123021 - 2⁹ = 11103122509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103123221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748900 + ... + 763581.

It is an arithmetic number, because the mean of its divisors is an integer number (1851277968).

Almost surely, 2^11103123021 is an apocalyptic number.

It is an amenable number.

11103123021 is a deficient number, since it is larger than the sum of its proper divisors (3707100723).

11103123021 is a wasteful number, since it uses less digits than its factorization.

11103123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514931.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11103123021 its reverse (12032130111), we get a palindrome (23135253132).

The spelling of 11103123021 in words is "eleven billion, one hundred three million, one hundred twenty-three thousand, twenty-one".