11203302221 has 4 divisors (see below), whose sum is σ = 11288823744. Its totient is φ = 11117780700.

The previous prime is 11203302197. The next prime is 11203302263. The reversal of 11203302221 is 12220330211.

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 11203302221 - 2²² = 11199107917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11203302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203307221) 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, 42760565 + ... + 42760826.

It is an arithmetic number, because the mean of its divisors is an integer number (2822205936).

Almost surely, 2^11203302221 is an apocalyptic number.

It is an amenable number.

11203302221 is a deficient number, since it is larger than the sum of its proper divisors (85521523).

11203302221 is an equidigital number, since it uses as much as digits as its factorization.

11203302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85521522.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11203302221 its reverse (12220330211), we get a palindrome (23423632432).

The spelling of 11203302221 in words is "eleven billion, two hundred three million, three hundred two thousand, two hundred twenty-one".