4223221121 has 16 divisors (see below), whose sum is σ = 4921344000. Its totient is φ = 3549125328.

The previous prime is 4223221103. The next prime is 4223221127. The reversal of 4223221121 is 1211223224.

It is not a de Polignac number, because 4223221121 - 2¹⁴ = 4223204737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4223221093 and 4223221102.

It is not an unprimeable number, because it can be changed into a prime (4223221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144830 + ... + 171528.

It is an arithmetic number, because the mean of its divisors is an integer number (307584000).

Almost surely, 2^4223221121 is an apocalyptic number.

It is an amenable number.

4223221121 is a deficient number, since it is larger than the sum of its proper divisors (698122879).

4223221121 is a wasteful number, since it uses less digits than its factorization.

4223221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27148.

The product of its digits is 384, while the sum is 20.

The square root of 4223221121 is about 64986.3148747488. The cubic root of 4223221121 is about 1616.3966449132.

Adding to 4223221121 its reverse (1211223224), we get a palindrome (5434444345).

The spelling of 4223221121 in words is "four billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-one".