4201432221 has 16 divisors (see below), whose sum is σ = 6404685824. Its totient is φ = 2399879664.

The previous prime is 4201432219. The next prime is 4201432267. The reversal of 4201432221 is 1222341024.

It is not a de Polignac number, because 4201432221 - 2¹ = 4201432219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201432121) 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, 17796 + ... + 93378.

It is an arithmetic number, because the mean of its divisors is an integer number (400292864).

Almost surely, 2^4201432221 is an apocalyptic number.

It is an amenable number.

4201432221 is a deficient number, since it is larger than the sum of its proper divisors (2203253603).

4201432221 is a wasteful number, since it uses less digits than its factorization.

4201432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78240.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4201432221 is about 64818.4558671371. The cubic root of 4201432221 is about 1613.6120209273.

Adding to 4201432221 its reverse (1222341024), we get a palindrome (5423773245).

The spelling of 4201432221 in words is "four billion, two hundred one million, four hundred thirty-two thousand, two hundred twenty-one".