43344104021 has 2 divisors, whose sum is σ = 43344104022. Its totient is φ = 43344104020.

The previous prime is 43344103997. The next prime is 43344104039. The reversal of 43344104021 is 12040144334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34452556996 + 8891547025 = 185614^2 + 94295^2 .

It is a cyclic number.

It is not a de Polignac number, because 43344104021 - 2¹⁴ = 43344087637 is a prime.

It is a super-2 number, since 2×43344104021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43344104071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21672052010 + 21672052011.

It is an arithmetic number, because the mean of its divisors is an integer number (21672052011).

Almost surely, 2^43344104021 is an apocalyptic number.

It is an amenable number.

43344104021 is a deficient number, since it is larger than the sum of its proper divisors (1).

43344104021 is an equidigital number, since it uses as much as digits as its factorization.

43344104021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43344104021 its reverse (12040144334), we get a palindrome (55384248355).

The spelling of 43344104021 in words is "forty-three billion, three hundred forty-four million, one hundred four thousand, twenty-one".