43122231001 has 2 divisors, whose sum is σ = 43122231002. Its totient is φ = 43122231000.

The previous prime is 43122230999. The next prime is 43122231017. The reversal of 43122231001 is 10013222134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33795307225 + 9326923776 = 183835^2 + 96576^2 .

It is a cyclic number.

It is not a de Polignac number, because 43122231001 - 2¹ = 43122230999 is a prime.

Together with 43122230999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43122231001.

It is not a weakly prime, because it can be changed into another prime (43122231701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561115500 + 21561115501.

It is an arithmetic number, because the mean of its divisors is an integer number (21561115501).

Almost surely, 2^43122231001 is an apocalyptic number.

It is an amenable number.

43122231001 is a deficient number, since it is larger than the sum of its proper divisors (1).

43122231001 is an equidigital number, since it uses as much as digits as its factorization.

43122231001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 43122231001 its reverse (10013222134), we get a palindrome (53135453135).

The spelling of 43122231001 in words is "forty-three billion, one hundred twenty-two million, two hundred thirty-one thousand, one".