11220221233 has 8 divisors (see below), whose sum is σ = 12281403176. Its totient is φ = 10187337600.

The previous prime is 11220221231. The next prime is 11220221237. The reversal of 11220221233 is 33212202211.

It can be written as a sum of positive squares in 4 ways, for example, as 352575729 + 10867645504 = 18777^2 + 104248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220221233 - 2¹ = 11220221231 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 11220221233.

It is not an unprimeable number, because it can be changed into a prime (11220221231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7073748 + ... + 7075333.

It is an arithmetic number, because the mean of its divisors is an integer number (1535175397).

Almost surely, 2^11220221233 is an apocalyptic number.

11220221233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11220221233 is a deficient number, since it is larger than the sum of its proper divisors (1061181943).

11220221233 is a wasteful number, since it uses less digits than its factorization.

11220221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14149155.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11220221233 its reverse (33212202211), we get a palindrome (44432423444).

The spelling of 11220221233 in words is "eleven billion, two hundred twenty million, two hundred twenty-one thousand, two hundred thirty-three".