23003011221 has 4 divisors (see below), whose sum is σ = 30670681632. Its totient is φ = 15335340812.

The previous prime is 23003011201. The next prime is 23003011231. The reversal of 23003011221 is 12211030032.

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 23003011221 - 2¹⁴ = 23002994837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23003011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003011201) 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, 3833835201 + ... + 3833835206.

It is an arithmetic number, because the mean of its divisors is an integer number (7667670408).

Almost surely, 2^23003011221 is an apocalyptic number.

It is an amenable number.

23003011221 is a deficient number, since it is larger than the sum of its proper divisors (7667670411).

23003011221 is an equidigital number, since it uses as much as digits as its factorization.

23003011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667670410.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23003011221 its reverse (12211030032), we get a palindrome (35214041253).

The spelling of 23003011221 in words is "twenty-three billion, three million, eleven thousand, two hundred twenty-one".