221130222120 has 96 divisors (see below), whose sum is σ = 718761906720. Its totient is φ = 58960782720.

The previous prime is 221130222097. The next prime is 221130222143. The reversal of 221130222120 is 21222031122.

221130222120 is a `hidden beast` number, since 221 + 1 + 302 + 22 + 120 = 666.

221130222120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221130222097) and next prime (221130222143).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221130222093 and 221130222102.

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 23 ways as a sum of consecutive naturals, for example, 3288435 + ... + 3355005.

It is an arithmetic number, because the mean of its divisors is an integer number (7487103195).

Almost surely, 2^221130222120 is an apocalyptic number.

221130222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221130222120 is an abundant number, since it is smaller than the sum of its proper divisors (497631684600).

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

221130222120 is a wasteful number, since it uses less digits than its factorization.

221130222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75815 (or 75808 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221130222120 its reverse (21222031122), we get a palindrome (242352253242).

The spelling of 221130222120 in words is "two hundred twenty-one billion, one hundred thirty million, two hundred twenty-two thousand, one hundred twenty".