23021003221 has 8 divisors (see below), whose sum is σ = 23369954400. Its totient is φ = 22672209648.

The previous prime is 23021003207. The next prime is 23021003227. The reversal of 23021003221 is 12230012032.

23021003221 is nontrivially palindromic in base 2.

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 23021003221 - 2⁵ = 23021003189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23021003195 and 23021003204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021003227) 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, 273630 + ... + 347728.

It is an arithmetic number, because the mean of its divisors is an integer number (2921244300).

Almost surely, 2^23021003221 is an apocalyptic number.

It is an amenable number.

23021003221 is a deficient number, since it is larger than the sum of its proper divisors (348951179).

23021003221 is an equidigital number, since it uses as much as digits as its factorization.

23021003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78803.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23021003221 its reverse (12230012032), we get a palindrome (35251015253).

The spelling of 23021003221 in words is "twenty-three billion, twenty-one million, three thousand, two hundred twenty-one".