11103230221 has 2 divisors, whose sum is σ = 11103230222. Its totient is φ = 11103230220.

The previous prime is 11103230219. The next prime is 11103230233. The reversal of 11103230221 is 12203230111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7667629225 + 3435600996 = 87565^2 + 58614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11103230221 - 2¹ = 11103230219 is a prime.

Together with 11103230219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11103230195 and 11103230204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11103233221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551615110 + 5551615111.

It is an arithmetic number, because the mean of its divisors is an integer number (5551615111).

Almost surely, 2^11103230221 is an apocalyptic number.

It is an amenable number.

11103230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11103230221 is an equidigital number, since it uses as much as digits as its factorization.

11103230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11103230221 its reverse (12203230111), we get a palindrome (23306460332).

The spelling of 11103230221 in words is "eleven billion, one hundred three million, two hundred thirty thousand, two hundred twenty-one".