43132423440221 has 2 divisors, whose sum is σ = 43132423440222. Its totient is φ = 43132423440220.

The previous prime is 43132423440199. The next prime is 43132423440247. The reversal of 43132423440221 is 12204432423134.

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., 42021328252996 + 1111095187225 = 6482386^2 + 1054085^2 .

It is a cyclic number.

It is not a de Polignac number, because 43132423440221 - 2³⁰ = 43131349698397 is a prime.

It is a super-4 number, since 4×43132423440221⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43132423448221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21566211720110 + 21566211720111.

It is an arithmetic number, because the mean of its divisors is an integer number (21566211720111).

Almost surely, 2^{43132423440221} is an apocalyptic number.

It is an amenable number.

43132423440221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43132423440221 is an equidigital number, since it uses as much as digits as its factorization.

43132423440221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 43132423440221 its reverse (12204432423134), we get a palindrome (55336855863355).

The spelling of 43132423440221 in words is "forty-three trillion, one hundred thirty-two billion, four hundred twenty-three million, four hundred forty thousand, two hundred twenty-one".