2221020122120 has 128 divisors (see below), whose sum is σ = 5115831955200. Its totient is φ = 867502531584.

The previous prime is 2221020122099. The next prime is 2221020122201. The reversal of 2221020122120 is 212210201222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 641355509 + ... + 641358971.

It is an arithmetic number, because the mean of its divisors is an integer number (39967437150).

Almost surely, 2^{2221020122120} is an apocalyptic number.

2221020122120 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 2221020122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2557915977600).

2221020122120 is an abundant number, since it is smaller than the sum of its proper divisors (2894811833080).

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

2221020122120 is a wasteful number, since it uses less digits than its factorization.

2221020122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221020122120 its reverse (212210201222), we get a palindrome (2433230323342).

The spelling of 2221020122120 in words is "two trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, one hundred twenty".