221322210120 has 192 divisors, whose sum is σ = 790679672640. Its totient is φ = 53244172800.

The previous prime is 221322210119. The next prime is 221322210139. The reversal of 221322210120 is 21012223122.

221322210120 is a `hidden beast` number, since 221 + 322 + 2 + 1 + 0 + 120 = 666.

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 = 221322210093 and 221322210102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305442 + ... + 732078.

It is an arithmetic number, because the mean of its divisors is an integer number (4118123295).

Almost surely, 2^221322210120 is an apocalyptic number.

221322210120 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 221322210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395339836320).

221322210120 is an abundant number, since it is smaller than the sum of its proper divisors (569357462520).

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

221322210120 is a wasteful number, since it uses less digits than its factorization.

221322210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426796 (or 426789 counting only the distinct ones).

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

Adding to 221322210120 its reverse (21012223122), we get a palindrome (242334433242).

The spelling of 221322210120 in words is "two hundred twenty-one billion, three hundred twenty-two million, two hundred ten thousand, one hundred twenty".