221311033112 has 16 divisors (see below), whose sum is σ = 446878047840. Its totient is φ = 102143553696.

The previous prime is 221311033093. The next prime is 221311033117. The reversal of 221311033112 is 211330113122.

It is a happy number.

221311033112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311033117) 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, 1063995248 + ... + 1063995455.

It is an arithmetic number, because the mean of its divisors is an integer number (27929877990).

Almost surely, 2^221311033112 is an apocalyptic number.

It is an amenable number.

221311033112 is an abundant number, since it is smaller than the sum of its proper divisors (225567014728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221311033112 is a wasteful number, since it uses less digits than its factorization.

221311033112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127990722 (or 2127990718 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221311033112 its reverse (211330113122), we get a palindrome (432641146234).

The spelling of 221311033112 in words is "two hundred twenty-one billion, three hundred eleven million, thirty-three thousand, one hundred twelve".