4221082231 has 4 divisors (see below), whose sum is σ = 4226211952. Its totient is φ = 4215952512.

The previous prime is 4221082189. The next prime is 4221082241. The reversal of 4221082231 is 1322801224.

4221082231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4221082231 - 2²¹ = 4218985079 is a prime.

It is a super-2 number, since 2×4221082231² = 35635070401727874722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221082196 and 4221082205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221082241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563626 + ... + 2565271.

It is an arithmetic number, because the mean of its divisors is an integer number (1056552988).

Almost surely, 2^4221082231 is an apocalyptic number.

4221082231 is a deficient number, since it is larger than the sum of its proper divisors (5129721).

4221082231 is an equidigital number, since it uses as much as digits as its factorization.

4221082231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129720.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 4221082231 is about 64969.8563258378. The cubic root of 4221082231 is about 1616.1237190789.

Adding to 4221082231 its reverse (1322801224), we get a palindrome (5543883455).

The spelling of 4221082231 in words is "four billion, two hundred twenty-one million, eighty-two thousand, two hundred thirty-one".