3630411221 has 2 divisors, whose sum is σ = 3630411222. Its totient is φ = 3630411220.

The previous prime is 3630411179. The next prime is 3630411223. The reversal of 3630411221 is 1221140363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1963730596 + 1666680625 = 44314^2 + 40825^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630411221 - 2²² = 3626216917 is a prime.

Together with 3630411223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3630411223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815205610 + 1815205611.

It is an arithmetic number, because the mean of its divisors is an integer number (1815205611).

Almost surely, 2^3630411221 is an apocalyptic number.

It is an amenable number.

3630411221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630411221 is an equidigital number, since it uses as much as digits as its factorization.

3630411221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3630411221 is about 60252.8938807092. The cubic root of 3630411221 is about 1536.9223999629.

Adding to 3630411221 its reverse (1221140363), we get a palindrome (4851551584).

The spelling of 3630411221 in words is "three billion, six hundred thirty million, four hundred eleven thousand, two hundred twenty-one".