23020233221 has 2 divisors, whose sum is σ = 23020233222. Its totient is φ = 23020233220.

The previous prime is 23020233217. The next prime is 23020233241. The reversal of 23020233221 is 12233202032.

It is an a-pointer prime, because the next prime (23020233241) can be obtained adding 23020233221 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18319622500 + 4700610721 = 135350^2 + 68561^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020233221 - 2² = 23020233217 is a prime.

It is a super-2 number, since 2×23020233221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23020233193 and 23020233202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020233241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510116610 + 11510116611.

It is an arithmetic number, because the mean of its divisors is an integer number (11510116611).

Almost surely, 2^23020233221 is an apocalyptic number.

It is an amenable number.

23020233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020233221 is an equidigital number, since it uses as much as digits as its factorization.

23020233221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23020233221 its reverse (12233202032), we get a palindrome (35253435253).

The spelling of 23020233221 in words is "twenty-three billion, twenty million, two hundred thirty-three thousand, two hundred twenty-one".