11331321123321 has 48 divisors (see below), whose sum is σ = 17588622441600. Its totient is φ = 7201395216288.

The previous prime is 11331321123251. The next prime is 11331321123347. The reversal of 11331321123321 is 12332112313311.

11331321123321 is a `hidden beast` number, since 1 + 1 + 3 + 3 + 1 + 321 + 1 + 2 + 332 + 1 = 666.

It is not a de Polignac number, because 11331321123321 - 2¹³ = 11331321115129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11331321123721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3727300 + ... + 6046106.

It is an arithmetic number, because the mean of its divisors is an integer number (366429634200).

Almost surely, 2^{11331321123321} is an apocalyptic number.

It is an amenable number.

11331321123321 is a deficient number, since it is larger than the sum of its proper divisors (6257301318279).

11331321123321 is an equidigital number, since it uses as much as digits as its factorization.

11331321123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319003 (or 2318918 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

Adding to 11331321123321 its reverse (12332112313311), we get a palindrome (23663433436632).

The spelling of 11331321123321 in words is "eleven trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty-one".