11224001021 has 4 divisors (see below), whose sum is σ = 11224510752. Its totient is φ = 11223491292.

The previous prime is 11224001011. The next prime is 11224001027. The reversal of 11224001021 is 12010042211.

It is a happy number.

11224001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-11224001021 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 = 11224000987 and 11224001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11224001027) 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 3 ways as a sum of consecutive naturals, for example, 220271 + ... + 266396.

It is an arithmetic number, because the mean of its divisors is an integer number (2806127688).

Almost surely, 2^11224001021 is an apocalyptic number.

It is an amenable number.

11224001021 is a deficient number, since it is larger than the sum of its proper divisors (509731).

11224001021 is an equidigital number, since it uses as much as digits as its factorization.

11224001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509730.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11224001021 its reverse (12010042211), we get a palindrome (23234043232).

The spelling of 11224001021 in words is "eleven billion, two hundred twenty-four million, one thousand, twenty-one".