4232251221 has 16 divisors (see below), whose sum is σ = 6299166720. Its totient is φ = 2505348720.

The previous prime is 4232251217. The next prime is 4232251301. The reversal of 4232251221 is 1221522324.

4232251221 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 4232251221 - 2² = 4232251217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4232251191 and 4232251200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4232251721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1489861 + ... + 1492698.

It is an arithmetic number, because the mean of its divisors is an integer number (393697920).

Almost surely, 2^4232251221 is an apocalyptic number.

It is an amenable number.

4232251221 is a deficient number, since it is larger than the sum of its proper divisors (2066915499).

4232251221 is a wasteful number, since it uses less digits than its factorization.

4232251221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982616.

The product of its digits is 1920, while the sum is 24.

The square root of 4232251221 is about 65055.7547108632. The cubic root of 4232251221 is about 1617.5478856400.

Adding to 4232251221 its reverse (1221522324), we get a palindrome (5453773545).

The spelling of 4232251221 in words is "four billion, two hundred thirty-two million, two hundred fifty-one thousand, two hundred twenty-one".