23020221001 has 4 divisors (see below), whose sum is σ = 24231811600. Its totient is φ = 21808630404.

The previous prime is 23020220939. The next prime is 23020221013. The reversal of 23020221001 is 10012202032.

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 23020221001 - 2²⁹ = 22483350089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23020221701) 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, 605795271 + ... + 605795308.

It is an arithmetic number, because the mean of its divisors is an integer number (6057952900).

Almost surely, 2^23020221001 is an apocalyptic number.

It is an amenable number.

23020221001 is a deficient number, since it is larger than the sum of its proper divisors (1211590599).

23020221001 is a wasteful number, since it uses less digits than its factorization.

23020221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211590598.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 23020221001 its reverse (10012202032), we get a palindrome (33032423033).

The spelling of 23020221001 in words is "twenty-three billion, twenty million, two hundred twenty-one thousand, one".