11000021233 has 4 divisors (see below), whose sum is σ = 11379332340. Its totient is φ = 10620710128.

The previous prime is 11000021209. The next prime is 11000021243. The reversal of 11000021233 is 33212000011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33212000011 = 166457 ⋅199523.

It can be written as a sum of positive squares in 2 ways, for example, as 2203081969 + 8796939264 = 46937^2 + 93792^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000021233 - 2²¹ = 10997924081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000021243) 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, 189655510 + ... + 189655567.

It is an arithmetic number, because the mean of its divisors is an integer number (2844833085).

Almost surely, 2^11000021233 is an apocalyptic number.

It is an amenable number.

11000021233 is a deficient number, since it is larger than the sum of its proper divisors (379311107).

11000021233 is an equidigital number, since it uses as much as digits as its factorization.

11000021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379311106.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 11000021233 its reverse (33212000011), we get a palindrome (44212021244).

The spelling of 11000021233 in words is "eleven billion, twenty-one thousand, two hundred thirty-three".