123333331321 has 2 divisors, whose sum is σ = 123333331322. Its totient is φ = 123333331320.

The previous prime is 123333331309. The next prime is 123333331339. The reversal of 123333331321 is 123133333321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111682287721 + 11651043600 = 334189^2 + 107940^2 .

It is a cyclic number.

It is not a de Polignac number, because 123333331321 - 2⁷ = 123333331193 is a prime.

It is a super-2 number, since 2×123333331321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123333331321.

It is not a weakly prime, because it can be changed into another prime (123333331361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61666665660 + 61666665661.

It is an arithmetic number, because the mean of its divisors is an integer number (61666665661).

Almost surely, 2^123333331321 is an apocalyptic number.

It is an amenable number.

123333331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123333331321 is an equidigital number, since it uses as much as digits as its factorization.

123333331321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 28.

Adding to 123333331321 its reverse (123133333321), we get a palindrome (246466664642).

The spelling of 123333331321 in words is "one hundred twenty-three billion, three hundred thirty-three million, three hundred thirty-one thousand, three hundred twenty-one".