221334234220 has 48 divisors (see below), whose sum is σ = 507935681568. Its totient is φ = 80345640960.

The previous prime is 221334234137. The next prime is 221334234221. The reversal of 221334234220 is 22432433122.

It is not an unprimeable number, because it can be changed into a prime (221334234221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744867 + ... + 998746.

It is an arithmetic number, because the mean of its divisors is an integer number (10581993366).

Almost surely, 2^221334234220 is an apocalyptic number.

221334234220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221334234220 is an abundant number, since it is smaller than the sum of its proper divisors (286601447348).

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

221334234220 is a wasteful number, since it uses less digits than its factorization.

221334234220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744210 (or 1744208 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221334234220 its reverse (22432433122), we get a palindrome (243766667342).

It can be divided in two parts, 221334 and 234220, that added together give a palindrome (455554).

The spelling of 221334234220 in words is "two hundred twenty-one billion, three hundred thirty-four million, two hundred thirty-four thousand, two hundred twenty".