23324321221 has 2 divisors, whose sum is σ = 23324321222. Its totient is φ = 23324321220.

The previous prime is 23324321197. The next prime is 23324321233. The reversal of 23324321221 is 12212342332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14415604225 + 8908716996 = 120065^2 + 94386^2 .

It is a cyclic number.

It is not a de Polignac number, because 23324321221 - 2¹³ = 23324313029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23324321821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11662160610 + 11662160611.

It is an arithmetic number, because the mean of its divisors is an integer number (11662160611).

Almost surely, 2^23324321221 is an apocalyptic number.

It is an amenable number.

23324321221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23324321221 is an equidigital number, since it uses as much as digits as its factorization.

23324321221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

Adding to 23324321221 its reverse (12212342332), we get a palindrome (35536663553).

The spelling of 23324321221 in words is "twenty-three billion, three hundred twenty-four million, three hundred twenty-one thousand, two hundred twenty-one".