63130221 has 24 divisors (see below), whose sum is σ = 113690304. Its totient is φ = 32794560.

The previous prime is 63130189. The next prime is 63130237. The reversal of 63130221 is 12203136.

63130221 = 305² + 306² + ... + 601².

63130221 is a `hidden beast` number, since 631 + 30 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 63130221 - 2⁵ = 63130189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63130194 and 63130203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63130241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44856 + ... + 46241.

It is an arithmetic number, because the mean of its divisors is an integer number (4737096).

Almost surely, 2^63130221 is an apocalyptic number.

It is an amenable number.

63130221 is a deficient number, since it is larger than the sum of its proper divisors (50560083).

63130221 is a wasteful number, since it uses less digits than its factorization.

63130221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91121 (or 91118 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 63130221 is about 7945.4528505303. The cubic root of 63130221 is about 398.1796891537.

Adding to 63130221 its reverse (12203136), we get a palindrome (75333357).

The spelling of 63130221 in words is "sixty-three million, one hundred thirty thousand, two hundred twenty-one".