11033232121 has 4 divisors (see below), whose sum is σ = 11033446500. Its totient is φ = 11033017744.

The previous prime is 11033232097. The next prime is 11033232167. The reversal of 11033232121 is 12123233011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12123233011 = 16301 ⋅743711.

It can be written as a sum of positive squares in 2 ways, for example, as 96255721 + 10936976400 = 9811^2 + 104580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11033232121 is a prime.

It is a super-2 number, since 2×11033232121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11033232521) 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, 21555 + ... + 150103.

It is an arithmetic number, because the mean of its divisors is an integer number (2758361625).

Almost surely, 2^11033232121 is an apocalyptic number.

It is an amenable number.

11033232121 is a deficient number, since it is larger than the sum of its proper divisors (214379).

11033232121 is an equidigital number, since it uses as much as digits as its factorization.

11033232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214378.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11033232121 its reverse (12123233011), we get a palindrome (23156465132).

The spelling of 11033232121 in words is "eleven billion, thirty-three million, two hundred thirty-two thousand, one hundred twenty-one".