23220320201 has 4 divisors (see below), whose sum is σ = 25006498692. Its totient is φ = 21434141712.

The previous prime is 23220320153. The next prime is 23220320203. The reversal of 23220320201 is 10202302232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11294588176 + 11925732025 = 106276^2 + 109205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23220320201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220320201.

It is not an unprimeable number, because it can be changed into a prime (23220320203) 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, 893089226 + ... + 893089251.

It is an arithmetic number, because the mean of its divisors is an integer number (6251624673).

Almost surely, 2^23220320201 is an apocalyptic number.

It is an amenable number.

23220320201 is a deficient number, since it is larger than the sum of its proper divisors (1786178491).

23220320201 is a wasteful number, since it uses less digits than its factorization.

23220320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786178490.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23220320201 its reverse (10202302232), we get a palindrome (33422622433).

The spelling of 23220320201 in words is "twenty-three billion, two hundred twenty million, three hundred twenty thousand, two hundred one".