11212323331321 has 6 divisors (see below), whose sum is σ = 13042906732410. Its totient is φ = 9610562855376.

The previous prime is 11212323331303. The next prime is 11212323331333. The reversal of 11212323331321 is 12313332321211.

It can be written as a sum of positive squares in only one way, i.e., 11201337985600 + 10985345721 = 3346840^2 + 104811^2 .

It is not a de Polignac number, because 11212323331321 - 2³⁷ = 11074884377849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212323331321.

It is not an unprimeable number, because it can be changed into a prime (11212323331351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114411462516 + ... + 114411462613.

It is an arithmetic number, because the mean of its divisors is an integer number (2173817788735).

Almost surely, 2^{11212323331321} is an apocalyptic number.

It is an amenable number.

11212323331321 is a deficient number, since it is larger than the sum of its proper divisors (1830583401089).

11212323331321 is an equidigital number, since it uses as much as digits as its factorization.

11212323331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228822925143 (or 228822925136 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

Adding to 11212323331321 its reverse (12313332321211), we get a palindrome (23525655652532).

The spelling of 11212323331321 in words is "eleven trillion, two hundred twelve billion, three hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty-one".