11303032221 has 32 divisors (see below), whose sum is σ = 18039840000. Its totient is φ = 6953200704.

The previous prime is 11303032217. The next prime is 11303032249. The reversal of 11303032221 is 12223030311.

It is not a de Polignac number, because 11303032221 - 2² = 11303032217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11303032194 and 11303032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303032291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1593160 + ... + 1600238.

It is an arithmetic number, because the mean of its divisors is an integer number (563745000).

Almost surely, 2^11303032221 is an apocalyptic number.

It is an amenable number.

11303032221 is a deficient number, since it is larger than the sum of its proper divisors (6736807779).

11303032221 is a wasteful number, since it uses less digits than its factorization.

11303032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650 (or 11644 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11303032221 its reverse (12223030311), we get a palindrome (23526062532).

The spelling of 11303032221 in words is "eleven billion, three hundred three million, thirty-two thousand, two hundred twenty-one".