221123030303220 has 192 divisors, whose sum is σ = 663359150555136. Its totient is φ = 54841183488000.

The previous prime is 221123030303167. The next prime is 221123030303293. The reversal of 221123030303220 is 22303030321122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29114169 + ... + 35914911.

It is an arithmetic number, because the mean of its divisors is an integer number (3454995575808).

Almost surely, 2^{221123030303220} is an apocalyptic number.

221123030303220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221123030303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331679575277568).

221123030303220 is an abundant number, since it is smaller than the sum of its proper divisors (442236120251916).

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

221123030303220 is a wasteful number, since it uses less digits than its factorization.

221123030303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801150 (or 6801148 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221123030303220 its reverse (22303030321122), we get a palindrome (243426060624342).

The spelling of 221123030303220 in words is "two hundred twenty-one trillion, one hundred twenty-three billion, thirty million, three hundred three thousand, two hundred twenty".