43121322433 has 16 divisors (see below), whose sum is σ = 49420800000. Its totient is φ = 36856764432.

The previous prime is 43121322383. The next prime is 43121322469. The reversal of 43121322433 is 33422312134.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43121322433 - 2³³ = 34531387841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43121322733) 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, 9213588 + ... + 9218266.

It is an arithmetic number, because the mean of its divisors is an integer number (3088800000).

Almost surely, 2^43121322433 is an apocalyptic number.

It is an amenable number.

43121322433 is a deficient number, since it is larger than the sum of its proper divisors (6299477567).

43121322433 is a wasteful number, since it uses less digits than its factorization.

43121322433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124.

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

Adding to 43121322433 its reverse (33422312134), we get a palindrome (76543634567).

The spelling of 43121322433 in words is "forty-three billion, one hundred twenty-one million, three hundred twenty-two thousand, four hundred thirty-three".