2120233221 has 12 divisors (see below), whose sum is σ = 3063299148. Its totient is φ = 1413147264.

The previous prime is 2120233211. The next prime is 2120233223. The reversal of 2120233221 is 1223320212.

2120233221 is a `hidden beast` number, since 212 + 0 + 233 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1981229121 + 139004100 = 44511^2 + 11790^2 .

It is not a de Polignac number, because 2120233221 - 2¹⁴ = 2120216837 is a prime.

It is a super-2 number, since 2×2120233221² = 8990777822864069682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2120233194 and 2120233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120233223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14221 + ... + 66653.

It is an arithmetic number, because the mean of its divisors is an integer number (255274929).

Almost surely, 2^2120233221 is an apocalyptic number.

It is an amenable number.

2120233221 is a deficient number, since it is larger than the sum of its proper divisors (943065927).

2120233221 is a wasteful number, since it uses less digits than its factorization.

2120233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56932 (or 56929 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2120233221 is about 46045.9902814566. The cubic root of 2120233221 is about 1284.6787633876.

Adding to 2120233221 its reverse (1223320212), we get a palindrome (3343553433).

The spelling of 2120233221 in words is "two billion, one hundred twenty million, two hundred thirty-three thousand, two hundred twenty-one".