43430134441221 has 32 divisors (see below), whose sum is σ = 71683523020800. Its totient is φ = 25761266069040.

The previous prime is 43430134441163. The next prime is 43430134441231. The reversal of 43430134441221 is 12214443103434.

43430134441221 is a `hidden beast` number, since 4 + 3 + 4 + 301 + 344 + 4 + 1 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 43430134441221 - 2²⁹ = 43429597570309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43430134441231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1555618051 + ... + 1555645968.

It is an arithmetic number, because the mean of its divisors is an integer number (2240110094400).

Almost surely, 2^{43430134441221} is an apocalyptic number.

It is an amenable number.

43430134441221 is a deficient number, since it is larger than the sum of its proper divisors (28253388579579).

43430134441221 is a wasteful number, since it uses less digits than its factorization.

43430134441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111264086 (or 3111264080 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 43430134441221 its reverse (12214443103434), we get a palindrome (55644577544655).

The spelling of 43430134441221 in words is "forty-three trillion, four hundred thirty billion, one hundred thirty-four million, four hundred forty-one thousand, two hundred twenty-one".