221311033120 has 48 divisors (see below), whose sum is σ = 526964272128. Its totient is φ = 87827362560.

The previous prime is 221311033117. The next prime is 221311033127. The reversal of 221311033120 is 21330113122.

It is not an unprimeable number, because it can be changed into a prime (221311033127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5425326 + ... + 5465965.

It is an arithmetic number, because the mean of its divisors is an integer number (10978422336).

Almost surely, 2^221311033120 is an apocalyptic number.

221311033120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221311033120 is an abundant number, since it is smaller than the sum of its proper divisors (305653239008).

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

221311033120 is a wasteful number, since it uses less digits than its factorization.

221311033120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891433 (or 10891425 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221311033120 its reverse (21330113122), we get a palindrome (242641146242).

The spelling of 221311033120 in words is "two hundred twenty-one billion, three hundred eleven million, thirty-three thousand, one hundred twenty".