11233203221 has 4 divisors (see below), whose sum is σ = 11240143200. Its totient is φ = 11226263244.

The previous prime is 11233203217. The next prime is 11233203239. The reversal of 11233203221 is 12230233211.

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 not a de Polignac number, because 11233203221 - 2² = 11233203217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11233203193 and 11233203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233203251) 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, 3467561 + ... + 3470798.

It is an arithmetic number, because the mean of its divisors is an integer number (2810035800).

Almost surely, 2^11233203221 is an apocalyptic number.

It is an amenable number.

11233203221 is a deficient number, since it is larger than the sum of its proper divisors (6939979).

11233203221 is an equidigital number, since it uses as much as digits as its factorization.

11233203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939978.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 11233203221 its reverse (12230233211), we get a palindrome (23463436432).

The spelling of 11233203221 in words is "eleven billion, two hundred thirty-three million, two hundred three thousand, two hundred twenty-one".