43121101304009 has 2 divisors, whose sum is σ = 43121101304010. Its totient is φ = 43121101304008.

The previous prime is 43121101303981. The next prime is 43121101304041. The reversal of 43121101304009 is 90040310112134.

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., 29532735966409 + 13588365337600 = 5434403^2 + 3686240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43121101304009 is a prime.

It is a super-3 number, since 3×43121101304009³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (43121101304509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21560550652004 + 21560550652005.

It is an arithmetic number, because the mean of its divisors is an integer number (21560550652005).

Almost surely, 2^{43121101304009} is an apocalyptic number.

It is an amenable number.

43121101304009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43121101304009 is an equidigital number, since it uses as much as digits as its factorization.

43121101304009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 43121101304009 in words is "forty-three trillion, one hundred twenty-one billion, one hundred one million, three hundred four thousand, nine".