11133251121 has 4 divisors (see below), whose sum is σ = 14844334832. Its totient is φ = 7422167412.

The previous prime is 11133251083. The next prime is 11133251141. The reversal of 11133251121 is 12115233111.

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 not a de Polignac number, because 11133251121 - 2¹³ = 11133242929 is a prime.

It is a super-3 number, since 3×11133251121³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11133251141) 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, 1855541851 + ... + 1855541856.

It is an arithmetic number, because the mean of its divisors is an integer number (3711083708).

Almost surely, 2^11133251121 is an apocalyptic number.

It is an amenable number.

11133251121 is a deficient number, since it is larger than the sum of its proper divisors (3711083711).

11133251121 is an equidigital number, since it uses as much as digits as its factorization.

11133251121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711083710.

The product of its digits is 180, while the sum is 21.

Adding to 11133251121 its reverse (12115233111), we get a palindrome (23248484232).

The spelling of 11133251121 in words is "eleven billion, one hundred thirty-three million, two hundred fifty-one thousand, one hundred twenty-one".