23020313221 has 4 divisors (see below), whose sum is σ = 23021125344. Its totient is φ = 23019501100.

The previous prime is 23020313201. The next prime is 23020313279. The reversal of 23020313221 is 12231302032.

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 not a de Polignac number, because 23020313221 - 2¹³ = 23020305029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020313201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361945 + ... + 420766.

It is an arithmetic number, because the mean of its divisors is an integer number (5755281336).

Almost surely, 2^23020313221 is an apocalyptic number.

It is an amenable number.

23020313221 is a deficient number, since it is larger than the sum of its proper divisors (812123).

23020313221 is an equidigital number, since it uses as much as digits as its factorization.

23020313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812122.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23020313221 its reverse (12231302032), we get a palindrome (35251615253).

The spelling of 23020313221 in words is "twenty-three billion, twenty million, three hundred thirteen thousand, two hundred twenty-one".