43221123 has 48 divisors (see below), whose sum is σ = 73468512. Its totient is φ = 24192000.

The previous prime is 43221121. The next prime is 43221131. The reversal of 43221123 is 32112234.

43221123 is a `hidden beast` number, since 432 + 211 + 23 = 666.

It is not a de Polignac number, because 43221123 - 2¹ = 43221121 is a prime.

It is a super-2 number, since 2×43221123² = 3736130946762258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43221096 and 43221105.

It is not an unprimeable number, because it can be changed into a prime (43221121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102453 + ... + 102873.

It is an arithmetic number, because the mean of its divisors is an integer number (1530594).

Almost surely, 2^43221123 is an apocalyptic number.

43221123 is a deficient number, since it is larger than the sum of its proper divisors (30247389).

43221123 is a wasteful number, since it uses less digits than its factorization.

43221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 513 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 43221123 is about 6574.2773747386. The cubic root of 43221123 is about 350.9393081807.

Adding to 43221123 its reverse (32112234), we get a palindrome (75333357).

Subtracting from 43221123 its reverse (32112234), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 432211 and 23, that added together give a palindrome (432234).

The spelling of 43221123 in words is "forty-three million, two hundred twenty-one thousand, one hundred twenty-three".