43221421023 has 8 divisors (see below), whose sum is σ = 62867521536. Its totient is φ = 26194800600.

The previous prime is 43221421021. The next prime is 43221421031. The reversal of 43221421023 is 32012412234.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43221421023 - 2¹ = 43221421021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43221420984 and 43221421002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654869983 + ... + 654870048.

It is an arithmetic number, because the mean of its divisors is an integer number (7858440192).

Almost surely, 2^43221421023 is an apocalyptic number.

43221421023 is a deficient number, since it is larger than the sum of its proper divisors (19646100513).

43221421023 is a wasteful number, since it uses less digits than its factorization.

43221421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309740045.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 43221421023 its reverse (32012412234), we get a palindrome (75233833257).

The spelling of 43221421023 in words is "forty-three billion, two hundred twenty-one million, four hundred twenty-one thousand, twenty-three".