43421321233 has 8 divisors (see below), whose sum is σ = 43489797120. Its totient is φ = 43352878080.

The previous prime is 43421321221. The next prime is 43421321249. The reversal of 43421321233 is 33212312434.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 43421321233 - 2²¹ = 43419224081 is a prime.

It is a super-2 number, since 2×43421321233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421321533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4386816 + ... + 4396702.

It is an arithmetic number, because the mean of its divisors is an integer number (5436224640).

Almost surely, 2^43421321233 is an apocalyptic number.

It is an amenable number.

43421321233 is a deficient number, since it is larger than the sum of its proper divisors (68475887).

43421321233 is an equidigital number, since it uses as much as digits as its factorization.

43421321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16367.

The product of its digits is 10368, while the sum is 28.

Adding to 43421321233 its reverse (33212312434), we get a palindrome (76633633667).

The spelling of 43421321233 in words is "forty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty-three".