4822021 has 4 divisors (see below), whose sum is σ = 4848844. Its totient is φ = 4795200.

The previous prime is 4822007. The next prime is 4822031. The reversal of 4822021 is 1202284.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152100 + 4669921 = 390^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 4822021 - 2¹³ = 4813829 is a prime.

It is an Ulam number.

It is a Duffinian number.

4822021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4822021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4822001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13140 + ... + 13501.

It is an arithmetic number, because the mean of its divisors is an integer number (1212211).

Almost surely, 2^4822021 is an apocalyptic number.

It is an amenable number.

4822021 is a deficient number, since it is larger than the sum of its proper divisors (26823).

4822021 is a wasteful number, since it uses less digits than its factorization.

4822021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26822.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4822021 is about 2195.9100619106. The cubic root of 4822021 is about 168.9441011164.

The spelling of 4822021 in words is "four million, eight hundred twenty-two thousand, twenty-one".