2221020110221 has 24 divisors (see below), whose sum is σ = 2467707927552. Its totient is φ = 1997293452000.

The previous prime is 2221020110213. The next prime is 2221020110233. The reversal of 2221020110221 is 1220110201222.

It is a happy number.

2221020110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221020110221 - 2³ = 2221020110213 is a prime.

It is a super-2 number, since 2×2221020110221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221020110195 and 2221020110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221020110921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13397380 + ... + 13562146.

It is an arithmetic number, because the mean of its divisors is an integer number (102821163648).

Almost surely, 2^{2221020110221} is an apocalyptic number.

It is an amenable number.

2221020110221 is a deficient number, since it is larger than the sum of its proper divisors (246687817331).

2221020110221 is a wasteful number, since it uses less digits than its factorization.

2221020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165993 (or 165982 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221020110221 its reverse (1220110201222), we get a palindrome (3441130311443).

The spelling of 2221020110221 in words is "two trillion, two hundred twenty-one billion, twenty million, one hundred ten thousand, two hundred twenty-one".