3620002221 has 24 divisors (see below), whose sum is σ = 5725976256. Its totient is φ = 2185583040.

The previous prime is 3620002193. The next prime is 3620002261. The reversal of 3620002221 is 1222000263.

3620002221 is a `hidden beast` number, since 3 + 620 + 0 + 0 + 22 + 21 = 666.

It is not a de Polignac number, because 3620002221 - 2⁷ = 3620002093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3620002194 and 3620002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620002261) 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 23 ways as a sum of consecutive naturals, for example, 43480 + ... + 95553.

It is an arithmetic number, because the mean of its divisors is an integer number (238582344).

Almost surely, 2^3620002221 is an apocalyptic number.

It is an amenable number.

3620002221 is a deficient number, since it is larger than the sum of its proper divisors (2105974035).

3620002221 is a wasteful number, since it uses less digits than its factorization.

3620002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139313 (or 139310 counting only the distinct ones).

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

The square root of 3620002221 is about 60166.4542830970. The cubic root of 3620002221 is about 1535.4521221557.

Adding to 3620002221 its reverse (1222000263), we get a palindrome (4842002484).

The spelling of 3620002221 in words is "three billion, six hundred twenty million, two thousand, two hundred twenty-one".