221332221011 has 4 divisors (see below), whose sum is σ = 241453332024. Its totient is φ = 201211110000.

The previous prime is 221332221001. The next prime is 221332221013. The reversal of 221332221011 is 110122233122.

221332221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221332221011 - 2⁶ = 221332220947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332221013) 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 3 ways as a sum of consecutive naturals, for example, 10060555490 + ... + 10060555511.

It is an arithmetic number, because the mean of its divisors is an integer number (60363333006).

Almost surely, 2^221332221011 is an apocalyptic number.

221332221011 is a deficient number, since it is larger than the sum of its proper divisors (20121111013).

221332221011 is a wasteful number, since it uses less digits than its factorization.

221332221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20121111012.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221332221011 its reverse (110122233122), we get a palindrome (331454454133).

The spelling of 221332221011 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred twenty-one thousand, eleven".