2120211210221 has 8 divisors (see below), whose sum is σ = 2336404482720. Its totient is φ = 1911603666672.

The previous prime is 2120211210199. The next prime is 2120211210253. The reversal of 2120211210221 is 1220121120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120211210221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120211210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120211210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896431651 + ... + 1896432768.

It is an arithmetic number, because the mean of its divisors is an integer number (292050560340).

Almost surely, 2^{2120211210221} is an apocalyptic number.

It is an amenable number.

2120211210221 is a deficient number, since it is larger than the sum of its proper divisors (216193272499).

2120211210221 is a wasteful number, since it uses less digits than its factorization.

2120211210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792864475.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120211210221 its reverse (1220121120212), we get a palindrome (3340332330433).

Subtracting from 2120211210221 its reverse (1220121120212), we obtain a palindrome (900090090009).

The spelling of 2120211210221 in words is "two trillion, one hundred twenty billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".