11504571011321 has 2 divisors, whose sum is σ = 11504571011322. Its totient is φ = 11504571011320.

The previous prime is 11504571011299. The next prime is 11504571011357. The reversal of 11504571011321 is 12311017540511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8123845255696 + 3380725755625 = 2850236^2 + 1838675^2 .

It is a cyclic number.

It is not a de Polignac number, because 11504571011321 - 2⁶ = 11504571011257 is a prime.

It is not a weakly prime, because it can be changed into another prime (11504571011371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752285505660 + 5752285505661.

It is an arithmetic number, because the mean of its divisors is an integer number (5752285505661).

Almost surely, 2^{11504571011321} is an apocalyptic number.

It is an amenable number.

11504571011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11504571011321 is an equidigital number, since it uses as much as digits as its factorization.

11504571011321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 11504571011321 its reverse (12311017540511), we get a palindrome (23815588551832).

The spelling of 11504571011321 in words is "eleven trillion, five hundred four billion, five hundred seventy-one million, eleven thousand, three hundred twenty-one".