2004220421 has 16 divisors (see below), whose sum is σ = 2382656640. Its totient is φ = 1649471040.

The previous prime is 2004220399. The next prime is 2004220429. The reversal of 2004220421 is 1240224002.

It is a happy number.

It is not a de Polignac number, because 2004220421 - 2⁶ = 2004220357 is a prime.

It is a super-3 number, since 3×2004220421³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2004220421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004220429) 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 15 ways as a sum of consecutive naturals, for example, 9470 + ... + 64016.

It is an arithmetic number, because the mean of its divisors is an integer number (148916040).

Almost surely, 2^2004220421 is an apocalyptic number.

It is an amenable number.

2004220421 is a deficient number, since it is larger than the sum of its proper divisors (378436219).

2004220421 is a wasteful number, since it uses less digits than its factorization.

2004220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54764.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2004220421 is about 44768.5204245126. The cubic root of 2004220421 is about 1260.8066601216.

Adding to 2004220421 its reverse (1240224002), we get a palindrome (3244444423).

The spelling of 2004220421 in words is "two billion, four million, two hundred twenty thousand, four hundred twenty-one".