4243322121 has 8 divisors (see below), whose sum is σ = 5695232064. Its totient is φ = 2810146800.

The previous prime is 4243322107. The next prime is 4243322131. The reversal of 4243322121 is 1212233424.

It is a happy number.

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

It is not a de Polignac number, because 4243322121 - 2¹¹ = 4243320073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4243322091 and 4243322100.

It is not an unprimeable number, because it can be changed into a prime (4243322131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4683126 + ... + 4684031.

It is an arithmetic number, because the mean of its divisors is an integer number (711904008).

Almost surely, 2^4243322121 is an apocalyptic number.

It is an amenable number.

4243322121 is a deficient number, since it is larger than the sum of its proper divisors (1451909943).

4243322121 is a wasteful number, since it uses less digits than its factorization.

4243322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9367311.

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

The square root of 4243322121 is about 65140.7869234015. The cubic root of 4243322121 is about 1618.9570741172.

Adding to 4243322121 its reverse (1212233424), we get a palindrome (5455555545).

The spelling of 4243322121 in words is "four billion, two hundred forty-three million, three hundred twenty-two thousand, one hundred twenty-one".