11133110221 has 8 divisors (see below), whose sum is σ = 11158677504. Its totient is φ = 11107567920.

The previous prime is 11133110171. The next prime is 11133110251. The reversal of 11133110221 is 12201133111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133110221 is a prime.

It is a super-2 number, since 2×11133110221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11133110195 and 11133110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133110251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101531 + ... + 1111591.

It is an arithmetic number, because the mean of its divisors is an integer number (1394834688).

Almost surely, 2^11133110221 is an apocalyptic number.

It is an amenable number.

11133110221 is a deficient number, since it is larger than the sum of its proper divisors (25567283).

11133110221 is a wasteful number, since it uses less digits than its factorization.

11133110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12491.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11133110221 its reverse (12201133111), we get a palindrome (23334243332).

The spelling of 11133110221 in words is "eleven billion, one hundred thirty-three million, one hundred ten thousand, two hundred twenty-one".