43222013 has 4 divisors (see below), whose sum is σ = 43243200. Its totient is φ = 43200828.

The previous prime is 43221961. The next prime is 43222033. The reversal of 43222013 is 31022234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43222013 - 2⁸ = 43221757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43221982 and 43222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43222033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7163 + ... + 11736.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^43222013 is an apocalyptic number.

It is an amenable number.

43222013 is a deficient number, since it is larger than the sum of its proper divisors (21187).

43222013 is a wasteful number, since it uses less digits than its factorization.

43222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21186.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43222013 is about 6574.3450624378. The cubic root of 43222013 is about 350.9417169862.

Adding to 43222013 its reverse (31022234), we get a palindrome (74244247).

The spelling of 43222013 in words is "forty-three million, two hundred twenty-two thousand, thirteen".