4220240121 has 12 divisors (see below), whose sum is σ = 6225603072. Its totient is φ = 2753631576.

The previous prime is 4220240113. The next prime is 4220240147. The reversal of 4220240121 is 1210420224.

4220240121 is a `hidden beast` number, since 42 + 202 + 401 + 21 = 666.

It is not a de Polignac number, because 4220240121 - 2³ = 4220240113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4220240094 and 4220240103.

It is not an unprimeable number, because it can be changed into a prime (4220240221) 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 11 ways as a sum of consecutive naturals, for example, 4988041 + ... + 4988886.

It is an arithmetic number, because the mean of its divisors is an integer number (518800256).

Almost surely, 2^4220240121 is an apocalyptic number.

It is an amenable number.

4220240121 is a deficient number, since it is larger than the sum of its proper divisors (2005362951).

4220240121 is a wasteful number, since it uses less digits than its factorization.

4220240121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976980 (or 9976977 counting only the distinct ones).

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

The square root of 4220240121 is about 64963.3752278928. The cubic root of 4220240121 is about 1616.0162391812.

Adding to 4220240121 its reverse (1210420224), we get a palindrome (5430660345).

The spelling of 4220240121 in words is "four billion, two hundred twenty million, two hundred forty thousand, one hundred twenty-one".