11133493482721 has 3 divisors (see below), whose sum is σ = 11133496819411. Its totient is φ = 11133490146032.

The previous prime is 11133493482707. The next prime is 11133493482737. The reversal of 11133493482721 is 12728439433111.

The square root of 11133493482721 is 3336689.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2848537193121 + 8284956289600 = 1687761^2 + 2878360^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11133493482721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11133493482791) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1668345 + ... + 5005033.

Almost surely, 2^{11133493482721} is an apocalyptic number.

11133493482721 is the 3336689-th square number.

11133493482721 is the 1668345-th centered octagonal number.

It is an amenable number.

11133493482721 is a deficient number, since it is larger than the sum of its proper divisors (3336690).

11133493482721 is an frugal number, since it uses more digits than its factorization.

11133493482721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673378 (or 3336689 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

Multiplying 11133493482721 by its sum of digits (49), we get a square (545541180653329 = 23356823²).

The spelling of 11133493482721 in words is "eleven trillion, one hundred thirty-three billion, four hundred ninety-three million, four hundred eighty-two thousand, seven hundred twenty-one".