11331320325121 has 2 divisors, whose sum is σ = 11331320325122. Its totient is φ = 11331320325120.

The previous prime is 11331320325113. The next prime is 11331320325133. The reversal of 11331320325121 is 12152302313311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6562250532721 + 4769069792400 = 2561689^2 + 2183820^2 .

It is an emirp because it is prime and its reverse (12152302313311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11331320325121 - 2³ = 11331320325113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11331320325121.

It is not a weakly prime, because it can be changed into another prime (11331320325161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665660162560 + 5665660162561.

It is an arithmetic number, because the mean of its divisors is an integer number (5665660162561).

Almost surely, 2^{11331320325121} is an apocalyptic number.

It is an amenable number.

11331320325121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331320325121 is an equidigital number, since it uses as much as digits as its factorization.

11331320325121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 11331320325121 its reverse (12152302313311), we get a palindrome (23483622638432).

The spelling of 11331320325121 in words is "eleven trillion, three hundred thirty-one billion, three hundred twenty million, three hundred twenty-five thousand, one hundred twenty-one".