221324420120 has 16 divisors (see below), whose sum is σ = 497979945360. Its totient is φ = 88529768032.

The previous prime is 221324420089. The next prime is 221324420173. The reversal of 221324420120 is 21024423122.

221324420120 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 an unprimeable number.

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, 2766555212 + ... + 2766555291.

It is an arithmetic number, because the mean of its divisors is an integer number (31123746585).

Almost surely, 2^221324420120 is an apocalyptic number.

221324420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221324420120 is an abundant number, since it is smaller than the sum of its proper divisors (276655525240).

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

221324420120 is a wasteful number, since it uses less digits than its factorization.

221324420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533110514 (or 5533110510 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221324420120 its reverse (21024423122), we get a palindrome (242348843242).

The spelling of 221324420120 in words is "two hundred twenty-one billion, three hundred twenty-four million, four hundred twenty thousand, one hundred twenty".