4136647221 has 36 divisors (see below), whose sum is σ = 7138619488. Its totient is φ = 2261006352.

The previous prime is 4136647189. The next prime is 4136647241. The reversal of 4136647221 is 1227466314.

4136647221 is a `hidden beast` number, since 4 + 1 + 3 + 6 + 647 + 2 + 2 + 1 = 666.

4136647221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4136647221 - 2⁵ = 4136647189 is a prime.

It is a super-2 number, since 2×4136647221² = 34223700462014045682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4136647241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28735 + ... + 95388.

Almost surely, 2^4136647221 is an apocalyptic number.

It is an amenable number.

4136647221 is a deficient number, since it is larger than the sum of its proper divisors (3001972267).

4136647221 is a wasteful number, since it uses less digits than its factorization.

4136647221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124182 (or 124156 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 4136647221 is about 64316.7724703285. The cubic root of 4136647221 is about 1605.2751954823.

The spelling of 4136647221 in words is "four billion, one hundred thirty-six million, six hundred forty-seven thousand, two hundred twenty-one".