2112224140221 has 16 divisors (see below), whose sum is σ = 3036237536640. Its totient is φ = 1298415821760.

The previous prime is 2112224140217. The next prime is 2112224140253. The reversal of 2112224140221 is 1220414222112.

It is not a de Polignac number, because 2112224140221 - 2² = 2112224140217 is a prime.

It is a super-2 number, since 2×2112224140221² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2112224140191 and 2112224140200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112224140291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29430750 + ... + 29502431.

It is an arithmetic number, because the mean of its divisors is an integer number (189764846040).

Almost surely, 2^{2112224140221} is an apocalyptic number.

It is an amenable number.

2112224140221 is a deficient number, since it is larger than the sum of its proper divisors (924013396419).

2112224140221 is a wasteful number, since it uses less digits than its factorization.

2112224140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58934116.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 2112224140221 its reverse (1220414222112), we get a palindrome (3332638362333).

The spelling of 2112224140221 in words is "two trillion, one hundred twelve billion, two hundred twenty-four million, one hundred forty thousand, two hundred twenty-one".