11243403021 has 8 divisors (see below), whose sum is σ = 15171821280. Its totient is φ = 7405293392.

The previous prime is 11243403013. The next prime is 11243403023. The reversal of 11243403021 is 12030434211.

11243403021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11243403021 - 2³ = 11243403013 is a prime.

It is a super-2 number, since 2×11243403021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243403023) 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, 22576866 + ... + 22577363.

It is an arithmetic number, because the mean of its divisors is an integer number (1896477660).

Almost surely, 2^11243403021 is an apocalyptic number.

It is an amenable number.

11243403021 is a deficient number, since it is larger than the sum of its proper divisors (3928418259).

11243403021 is an equidigital number, since it uses as much as digits as its factorization.

11243403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45154315.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11243403021 its reverse (12030434211), we get a palindrome (23273837232).

The spelling of 11243403021 in words is "eleven billion, two hundred forty-three million, four hundred three thousand, twenty-one".