443223132421 has 2 divisors, whose sum is σ = 443223132422. Its totient is φ = 443223132420.

The previous prime is 443223132413. The next prime is 443223132449. The reversal of 443223132421 is 124231322344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347687122500 + 95536009921 = 589650^2 + 309089^2 .

It is a cyclic number.

It is not a de Polignac number, because 443223132421 - 2³ = 443223132413 is a prime.

It is a super-2 number, since 2×443223132421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443223132461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221611566210 + 221611566211.

It is an arithmetic number, because the mean of its divisors is an integer number (221611566211).

Almost surely, 2^443223132421 is an apocalyptic number.

It is an amenable number.

443223132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

443223132421 is an equidigital number, since it uses as much as digits as its factorization.

443223132421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 443223132421 its reverse (124231322344), we get a palindrome (567454454765).

The spelling of 443223132421 in words is "four hundred forty-three billion, two hundred twenty-three million, one hundred thirty-two thousand, four hundred twenty-one".