11133322121 has 4 divisors (see below), whose sum is σ = 11134003200. Its totient is φ = 11132641044.

The previous prime is 11133322087. The next prime is 11133322141. The reversal of 11133322121 is 12122333111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133322121 is a prime.

It is a super-2 number, since 2×11133322121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11133322093 and 11133322102.

It is not an unprimeable number, because it can be changed into a prime (11133322141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315401 + ... + 348918.

It is an arithmetic number, because the mean of its divisors is an integer number (2783500800).

Almost surely, 2^11133322121 is an apocalyptic number.

It is an amenable number.

11133322121 is a deficient number, since it is larger than the sum of its proper divisors (681079).

11133322121 is an equidigital number, since it uses as much as digits as its factorization.

11133322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681078.

The product of its digits is 216, while the sum is 20.

Adding to 11133322121 its reverse (12122333111), we get a palindrome (23255655232).

The spelling of 11133322121 in words is "eleven billion, one hundred thirty-three million, three hundred twenty-two thousand, one hundred twenty-one".