2120000221 has 8 divisors (see below), whose sum is σ = 2233056320. Its totient is φ = 2007091872.

The previous prime is 2120000173. The next prime is 2120000237. The reversal of 2120000221 is 1220000212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120000221 - 2²⁹ = 1583129309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120000198 and 2120000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120000251) 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 7 ways as a sum of consecutive naturals, for example, 6840 + ... + 65473.

It is an arithmetic number, because the mean of its divisors is an integer number (279132040).

Almost surely, 2^2120000221 is an apocalyptic number.

It is an amenable number.

2120000221 is a deficient number, since it is larger than the sum of its proper divisors (113056099).

2120000221 is a wasteful number, since it uses less digits than its factorization.

2120000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73875.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2120000221 is about 46043.4601327919. The cubic root of 2120000221 is about 1284.6317023514.

Adding to 2120000221 its reverse (1220000212), we get a palindrome (3340000433).

Subtracting from 2120000221 its reverse (1220000212), we obtain a palindrome (900000009).

The spelling of 2120000221 in words is "two billion, one hundred twenty million, two hundred twenty-one", and thus it is an aban number.