3630211021 has 2 divisors, whose sum is σ = 3630211022. Its totient is φ = 3630211020.

The previous prime is 3630211019. The next prime is 3630211037. The reversal of 3630211021 is 1201120363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2048558121 + 1581652900 = 45261^2 + 39770^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630211021 - 2¹ = 3630211019 is a prime.

Together with 3630211019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3630211021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3630211061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815105510 + 1815105511.

It is an arithmetic number, because the mean of its divisors is an integer number (1815105511).

Almost surely, 2^3630211021 is an apocalyptic number.

It is an amenable number.

3630211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630211021 is an equidigital number, since it uses as much as digits as its factorization.

3630211021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3630211021 is about 60251.2325268123. The cubic root of 3630211021 is about 1536.8941481110.

Adding to 3630211021 its reverse (1201120363), we get a palindrome (4831331384).

The spelling of 3630211021 in words is "three billion, six hundred thirty million, two hundred eleven thousand, twenty-one".