11220323021 has 8 divisors (see below), whose sum is σ = 11290360704. Its totient is φ = 11150319600.

The previous prime is 11220323011. The next prime is 11220323027. The reversal of 11220323021 is 12032302211.

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 11220323021 - 2³⁰ = 10146581197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220323027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046936 + ... + 1057598.

It is an arithmetic number, because the mean of its divisors is an integer number (1411295088).

Almost surely, 2^11220323021 is an apocalyptic number.

It is an amenable number.

11220323021 is a deficient number, since it is larger than the sum of its proper divisors (70037683).

11220323021 is a wasteful number, since it uses less digits than its factorization.

11220323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17131.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11220323021 its reverse (12032302211), we get a palindrome (23252625232).

The spelling of 11220323021 in words is "eleven billion, two hundred twenty million, three hundred twenty-three thousand, twenty-one".