1323123222321 has 6 divisors (see below), whose sum is σ = 1911177987810. Its totient is φ = 882082148208.

The previous prime is 1323123222299. The next prime is 1323123222361. The reversal of 1323123222321 is 1232223213231.

1323123222321 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 12 + 322 + 2 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1299682081296 + 23441141025 = 1140036^2 + 153105^2 .

It is not a de Polignac number, because 1323123222321 - 2⁶ = 1323123222257 is a prime.

It is a super-2 number, since 2×1323123222321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323123222361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73506845676 + ... + 73506845693.

It is an arithmetic number, because the mean of its divisors is an integer number (318529664635).

Almost surely, 2^{1323123222321} is an apocalyptic number.

It is an amenable number.

1323123222321 is a deficient number, since it is larger than the sum of its proper divisors (588054765489).

1323123222321 is a wasteful number, since it uses less digits than its factorization.

1323123222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147013691375 (or 147013691372 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 1323123222321 its reverse (1232223213231), we get a palindrome (2555346435552).

The spelling of 1323123222321 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-three million, two hundred twenty-two thousand, three hundred twenty-one".