1101231223321 has 2 divisors, whose sum is σ = 1101231223322. Its totient is φ = 1101231223320.

The previous prime is 1101231223303. The next prime is 1101231223331. The reversal of 1101231223321 is 1233221321011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 906542015625 + 194689207696 = 952125^2 + 441236^2 .

It is an emirp because it is prime and its reverse (1233221321011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101231223321 - 2⁷ = 1101231223193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101231223292 and 1101231223301.

It is not a weakly prime, because it can be changed into another prime (1101231223331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550615611660 + 550615611661.

It is an arithmetic number, because the mean of its divisors is an integer number (550615611661).

Almost surely, 2^{1101231223321} is an apocalyptic number.

It is an amenable number.

1101231223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101231223321 is an equidigital number, since it uses as much as digits as its factorization.

1101231223321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1101231223321 its reverse (1233221321011), we get a palindrome (2334452544332).

The spelling of 1101231223321 in words is "one trillion, one hundred one billion, two hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty-one".