43343220505121 has 18 divisors (see below), whose sum is σ = 45558453685266. Its totient is φ = 41234115832800.

The previous prime is 43343220505063. The next prime is 43343220505153. The reversal of 43343220505121 is 12150502234334.

It can be written as a sum of positive squares in only one way, i.e., 28308369354721 + 15034851150400 = 5320561^2 + 3877480^2 .

It is not a de Polignac number, because 43343220505121 - 2¹⁰ = 43343220504097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43343210505121) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3133100 + ... + 9823581.

It is an arithmetic number, because the mean of its divisors is an integer number (2531025204737).

Almost surely, 2^{43343220505121} is an apocalyptic number.

It is an amenable number.

43343220505121 is a deficient number, since it is larger than the sum of its proper divisors (2215233180145).

43343220505121 is an equidigital number, since it uses as much as digits as its factorization.

43343220505121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12956861 (or 12956771 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 43343220505121 its reverse (12150502234334), we get a palindrome (55493722739455).

The spelling of 43343220505121 in words is "forty-three trillion, three hundred forty-three billion, two hundred twenty million, five hundred five thousand, one hundred twenty-one".