23331222024221 has 2 divisors, whose sum is σ = 23331222024222. Its totient is φ = 23331222024220.

The previous prime is 23331222024161. The next prime is 23331222024283. The reversal of 23331222024221 is 12242022213332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23154006283321 + 177215740900 = 4811861^2 + 420970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23331222024221 is a prime.

It is a super-2 number, since 2×23331222024221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23331222021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665611012110 + 11665611012111.

It is an arithmetic number, because the mean of its divisors is an integer number (11665611012111).

Almost surely, 2^{23331222024221} is an apocalyptic number.

It is an amenable number.

23331222024221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23331222024221 is an equidigital number, since it uses as much as digits as its factorization.

23331222024221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 23331222024221 its reverse (12242022213332), we get a palindrome (35573244237553).

The spelling of 23331222024221 in words is "twenty-three trillion, three hundred thirty-one billion, two hundred twenty-two million, twenty-four thousand, two hundred twenty-one".