432021413221 has 4 divisors (see below), whose sum is σ = 432065646700. Its totient is φ = 431977179744.

The previous prime is 432021413179. The next prime is 432021413267. The reversal of 432021413221 is 122314120234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122314120234 = 2 ⋅61157060117.

It can be written as a sum of positive squares in 2 ways, for example, as 297585524196 + 134435889025 = 545514^2 + 366655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-432021413221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432021416221) 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, 22102086 + ... + 22121623.

It is an arithmetic number, because the mean of its divisors is an integer number (108016411675).

Almost surely, 2^432021413221 is an apocalyptic number.

It is an amenable number.

432021413221 is a deficient number, since it is larger than the sum of its proper divisors (44233479).

432021413221 is an equidigital number, since it uses as much as digits as its factorization.

432021413221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44233478.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 432021413221 its reverse (122314120234), we get a palindrome (554335533455).

The spelling of 432021413221 in words is "four hundred thirty-two billion, twenty-one million, four hundred thirteen thousand, two hundred twenty-one".