43232311323221 has 2 divisors, whose sum is σ = 43232311323222. Its totient is φ = 43232311323220.

The previous prime is 43232311323181. The next prime is 43232311323283. The reversal of 43232311323221 is 12232311323234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41680258800625 + 1552052522596 = 6456025^2 + 1245814^2 .

It is a cyclic number.

It is not a de Polignac number, because 43232311323221 - 2¹⁸ = 43232311061077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43232311323121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21616155661610 + 21616155661611.

It is an arithmetic number, because the mean of its divisors is an integer number (21616155661611).

Almost surely, 2^{43232311323221} is an apocalyptic number.

It is an amenable number.

43232311323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43232311323221 is an equidigital number, since it uses as much as digits as its factorization.

43232311323221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

Adding to 43232311323221 its reverse (12232311323234), we get a palindrome (55464622646455).

The spelling of 43232311323221 in words is "forty-three trillion, two hundred thirty-two billion, three hundred eleven million, three hundred twenty-three thousand, two hundred twenty-one".