4224002121 has 32 divisors (see below), whose sum is σ = 6676560000. Its totient is φ = 2630085120.

The previous prime is 4224002113. The next prime is 4224002129. The reversal of 4224002121 is 1212004224.

4224002121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4224002113) and next prime (4224002129).

It is not a de Polignac number, because 4224002121 - 2³ = 4224002113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4224002094 and 4224002103.

It is not an unprimeable number, because it can be changed into a prime (4224002129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25005 + ... + 95253.

It is an arithmetic number, because the mean of its divisors is an integer number (208642500).

Almost surely, 2^4224002121 is an apocalyptic number.

It is an amenable number.

4224002121 is a deficient number, since it is larger than the sum of its proper divisors (2452557879).

4224002121 is a wasteful number, since it uses less digits than its factorization.

4224002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70406 (or 70400 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4224002121 is about 64992.3235544014. The cubic root of 4224002121 is about 1616.4962788129.

Adding to 4224002121 its reverse (1212004224), we get a palindrome (5436006345).

The spelling of 4224002121 in words is "four billion, two hundred twenty-four million, two thousand, one hundred twenty-one".