11122021233 has 6 divisors (see below), whose sum is σ = 16065141794. Its totient is φ = 7414680816.

The previous prime is 11122021213. The next prime is 11122021247. The reversal of 11122021233 is 33212022111.

It can be written as a sum of positive squares in only one way, i.e., 9818233569 + 1303787664 = 99087^2 + 36108^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11122021233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122021213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617890060 + ... + 617890077.

Almost surely, 2^11122021233 is an apocalyptic number.

It is an amenable number.

11122021233 is a deficient number, since it is larger than the sum of its proper divisors (4943120561).

11122021233 is a wasteful number, since it uses less digits than its factorization.

11122021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235780143 (or 1235780140 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11122021233 its reverse (33212022111), we get a palindrome (44334043344).

The spelling of 11122021233 in words is "eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred thirty-three".