11331320322121 has 4 divisors (see below), whose sum is σ = 11375411062932. Its totient is φ = 11287229581312.

The previous prime is 11331320322073. The next prime is 11331320322169. The reversal of 11331320322121 is 12122302313311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11331320322073) and next prime (11331320322169).

It can be written as a sum of positive squares in 2 ways, for example, as 7590438255625 + 3740882066496 = 2755075^2 + 1934136^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331320322121 - 2²⁹ = 11330783451209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331320325121) 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 in 3 ways as a sum of consecutive naturals, for example, 22045370020 + ... + 22045370533.

It is an arithmetic number, because the mean of its divisors is an integer number (2843852765733).

Almost surely, 2^{11331320322121} is an apocalyptic number.

It is an amenable number.

11331320322121 is a deficient number, since it is larger than the sum of its proper divisors (44090740811).

11331320322121 is an equidigital number, since it uses as much as digits as its factorization.

11331320322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44090740810.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11331320322121 its reverse (12122302313311), we get a palindrome (23453622635432).

The spelling of 11331320322121 in words is "eleven trillion, three hundred thirty-one billion, three hundred twenty million, three hundred twenty-two thousand, one hundred twenty-one".