11121312004321 has 4 divisors (see below), whose sum is σ = 11121786952452. Its totient is φ = 11120837056192.

The previous prime is 11121312004291. The next prime is 11121312004333. The reversal of 11121312004321 is 12340021312111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8803415373025 + 2317896631296 = 2967055^2 + 1522464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121312004321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121312004292 and 11121312004301.

It is not an unprimeable number, because it can be changed into a prime (11121312004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237438940 + ... + 237485773.

It is an arithmetic number, because the mean of its divisors is an integer number (2780446738113).

Almost surely, 2^{11121312004321} is an apocalyptic number.

It is an amenable number.

11121312004321 is a deficient number, since it is larger than the sum of its proper divisors (474948131).

11121312004321 is an equidigital number, since it uses as much as digits as its factorization.

11121312004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474948130.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11121312004321 its reverse (12340021312111), we get a palindrome (23461333316432).

The spelling of 11121312004321 in words is "eleven trillion, one hundred twenty-one billion, three hundred twelve million, four thousand, three hundred twenty-one".