11223013021 has 16 divisors (see below), whose sum is σ = 12677702400. Its totient is φ = 9841406400.

The previous prime is 11223012979. The next prime is 11223013027. The reversal of 11223013021 is 12031032211.

It is a cyclic number.

It is not a de Polignac number, because 11223013021 - 2¹⁷ = 11222881949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11223012986 and 11223013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223013027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324556 + ... + 357466.

It is an arithmetic number, because the mean of its divisors is an integer number (792356400).

Almost surely, 2^11223013021 is an apocalyptic number.

11223013021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11223013021 is a deficient number, since it is larger than the sum of its proper divisors (1454689379).

11223013021 is a wasteful number, since it uses less digits than its factorization.

11223013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34020.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11223013021 its reverse (12031032211), we get a palindrome (23254045232).

The spelling of 11223013021 in words is "eleven billion, two hundred twenty-three million, thirteen thousand, twenty-one".