4213597221 has 24 divisors (see below), whose sum is σ = 6353268480. Its totient is φ = 2687889600.

The previous prime is 4213597163. The next prime is 4213597229. The reversal of 4213597221 is 1227953124.

4213597221 is a `hidden beast` number, since 42 + 1 + 3 + 597 + 2 + 21 = 666.

4213597221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4213597221 - 2¹⁴ = 4213580837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4213597229) 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, 60015 + ... + 109676.

It is an arithmetic number, because the mean of its divisors is an integer number (264719520).

Almost surely, 2^4213597221 is an apocalyptic number.

It is an amenable number.

4213597221 is a deficient number, since it is larger than the sum of its proper divisors (2139671259).

4213597221 is a wasteful number, since it uses less digits than its factorization.

4213597221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169817 (or 169814 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 4213597221 is about 64912.2270531523. The cubic root of 4213597221 is about 1615.1678931616.

The spelling of 4213597221 in words is "four billion, two hundred thirteen million, five hundred ninety-seven thousand, two hundred twenty-one".