43235505121 has 2 divisors, whose sum is σ = 43235505122. Its totient is φ = 43235505120.

The previous prime is 43235505113. The next prime is 43235505127. The reversal of 43235505121 is 12150553234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25868218896 + 17367286225 = 160836^2 + 131785^2 .

It is a cyclic number.

It is not a de Polignac number, because 43235505121 - 2³ = 43235505113 is a prime.

It is not a weakly prime, because it can be changed into another prime (43235505127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21617752560 + 21617752561.

It is an arithmetic number, because the mean of its divisors is an integer number (21617752561).

Almost surely, 2^43235505121 is an apocalyptic number.

It is an amenable number.

43235505121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43235505121 is an equidigital number, since it uses as much as digits as its factorization.

43235505121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 43235505121 in words is "forty-three billion, two hundred thirty-five million, five hundred five thousand, one hundred twenty-one".