23022232221 has 4 divisors (see below), whose sum is σ = 30696309632. Its totient is φ = 15348154812.

The previous prime is 23022232199. The next prime is 23022232249. The reversal of 23022232221 is 12223222032.

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 not a de Polignac number, because 23022232221 - 2¹⁴ = 23022215837 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 (23022232271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3837038701 + ... + 3837038706.

It is an arithmetic number, because the mean of its divisors is an integer number (7674077408).

Almost surely, 2^23022232221 is an apocalyptic number.

It is an amenable number.

23022232221 is a deficient number, since it is larger than the sum of its proper divisors (7674077411).

23022232221 is an equidigital number, since it uses as much as digits as its factorization.

23022232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7674077410.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23022232221 its reverse (12223222032), we get a palindrome (35245454253).

The spelling of 23022232221 in words is "twenty-three billion, twenty-two million, two hundred thirty-two thousand, two hundred twenty-one".