1121321122321 has 2 divisors, whose sum is σ = 1121321122322. Its totient is φ = 1121321122320.

The previous prime is 1121321122297. The next prime is 1121321122331. The reversal of 1121321122321 is 1232211231211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 928600122321 + 192721000000 = 963639^2 + 439000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121321122321 is a prime.

It is a super-2 number, since 2×1121321122321² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121321122292 and 1121321122301.

It is not a weakly prime, because it can be changed into another prime (1121321122331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560660561160 + 560660561161.

It is an arithmetic number, because the mean of its divisors is an integer number (560660561161).

Almost surely, 2^{1121321122321} is an apocalyptic number.

It is an amenable number.

1121321122321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121321122321 is an equidigital number, since it uses as much as digits as its factorization.

1121321122321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

Adding to 1121321122321 its reverse (1232211231211), we get a palindrome (2353532353532).

The spelling of 1121321122321 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-two thousand, three hundred twenty-one".