2211021110221 has 64 divisors (see below), whose sum is σ = 2883558735360. Its totient is φ = 1646852928000.

The previous prime is 2211021110201. The next prime is 2211021110227. The reversal of 2211021110221 is 1220111201122.

It is not a de Polignac number, because 2211021110221 - 2⁷ = 2211021110093 is a prime.

It is a super-2 number, since 2×2211021110221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211021110195 and 2211021110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211021110227) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 189667425 + ... + 189679081.

It is an arithmetic number, because the mean of its divisors is an integer number (45055605240).

Almost surely, 2^{2211021110221} is an apocalyptic number.

It is an amenable number.

2211021110221 is a deficient number, since it is larger than the sum of its proper divisors (672537625139).

2211021110221 is a wasteful number, since it uses less digits than its factorization.

2211021110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11863 (or 11805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2211021110221 its reverse (1220111201122), we get a palindrome (3431132311343).

Subtracting from 2211021110221 its reverse (1220111201122), we obtain a palindrome (990909909099).

The spelling of 2211021110221 in words is "two trillion, two hundred eleven billion, twenty-one million, one hundred ten thousand, two hundred twenty-one".