43312222221 has 8 divisors (see below), whose sum is σ = 58978345344. Its totient is φ = 28260456960.

The previous prime is 43312222211. The next prime is 43312222241. The reversal of 43312222221 is 12222221334.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43312222221 - 2⁵ = 43312222189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43312222191 and 43312222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43312222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153589300 + ... + 153589581.

It is an arithmetic number, because the mean of its divisors is an integer number (7372293168).

Almost surely, 2^43312222221 is an apocalyptic number.

It is an amenable number.

43312222221 is a deficient number, since it is larger than the sum of its proper divisors (15666123123).

43312222221 is a wasteful number, since it uses less digits than its factorization.

43312222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307178931.

The product of its digits is 2304, while the sum is 24.

Adding to 43312222221 its reverse (12222221334), we get a palindrome (55534443555).

The spelling of 43312222221 in words is "forty-three billion, three hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".