11011232303221 has 4 divisors (see below), whose sum is σ = 11021306624812. Its totient is φ = 11001157981632.

The previous prime is 11011232303219. The next prime is 11011232303251. The reversal of 11011232303221 is 12230323211011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9531637402225 + 1479594900996 = 3087335^2 + 1216386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011232303221 - 2¹ = 11011232303219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011232303192 and 11011232303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011232303251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5037159156 + ... + 5037161341.

It is an arithmetic number, because the mean of its divisors is an integer number (2755326656203).

Almost surely, 2^{11011232303221} is an apocalyptic number.

It is an amenable number.

11011232303221 is a deficient number, since it is larger than the sum of its proper divisors (10074321591).

11011232303221 is a wasteful number, since it uses less digits than its factorization.

11011232303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074321590.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11011232303221 its reverse (12230323211011), we get a palindrome (23241555514232).

The spelling of 11011232303221 in words is "eleven trillion, eleven billion, two hundred thirty-two million, three hundred three thousand, two hundred twenty-one".