1323303021121 has 2 divisors, whose sum is σ = 1323303021122. Its totient is φ = 1323303021120.

The previous prime is 1323303021083. The next prime is 1323303021133. The reversal of 1323303021121 is 1211203033231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031880114225 + 291422906896 = 1015815^2 + 539836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323303021121 - 2⁷ = 1323303020993 is a prime.

It is a super-2 number, since 2×1323303021121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323303021092 and 1323303021101.

It is not a weakly prime, because it can be changed into another prime (1323303021421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661651510560 + 661651510561.

It is an arithmetic number, because the mean of its divisors is an integer number (661651510561).

Almost surely, 2^{1323303021121} is an apocalyptic number.

It is an amenable number.

1323303021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323303021121 is an equidigital number, since it uses as much as digits as its factorization.

1323303021121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1323303021121 its reverse (1211203033231), we get a palindrome (2534506054352).

The spelling of 1323303021121 in words is "one trillion, three hundred twenty-three billion, three hundred three million, twenty-one thousand, one hundred twenty-one".