2120003221 has 4 divisors (see below), whose sum is σ = 2422860832. Its totient is φ = 1817145612.

The previous prime is 2120003203. The next prime is 2120003251. The reversal of 2120003221 is 1223000212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120003221 - 2⁵ = 2120003189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120003201) 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 3 ways as a sum of consecutive naturals, for example, 151428795 + ... + 151428808.

It is an arithmetic number, because the mean of its divisors is an integer number (605715208).

Almost surely, 2^2120003221 is an apocalyptic number.

It is an amenable number.

2120003221 is a deficient number, since it is larger than the sum of its proper divisors (302857611).

2120003221 is an equidigital number, since it uses as much as digits as its factorization.

2120003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302857610.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2120003221 is about 46043.4927106969. The cubic root of 2120003221 is about 1284.6323083094.

Adding to 2120003221 its reverse (1223000212), we get a palindrome (3343003433).

The spelling of 2120003221 in words is "two billion, one hundred twenty million, three thousand, two hundred twenty-one".