4821121 has 4 divisors (see below), whose sum is σ = 4868032. Its totient is φ = 4774212.

The previous prime is 4821109. The next prime is 4821127. The reversal of 4821121 is 1211284.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4821121 - 2¹⁹ = 4296833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4821127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23301 + ... + 23506.

It is an arithmetic number, because the mean of its divisors is an integer number (1217008).

Almost surely, 2^4821121 is an apocalyptic number.

It is an amenable number.

4821121 is a deficient number, since it is larger than the sum of its proper divisors (46911).

4821121 is a wasteful number, since it uses less digits than its factorization.

4821121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46910.

The product of its digits is 128, while the sum is 19.

The square root of 4821121 is about 2195.7051259220. The cubic root of 4821121 is about 168.9335896765.

The spelling of 4821121 in words is "four million, eight hundred twenty-one thousand, one hundred twenty-one".