2003220021 has 8 divisors (see below), whose sum is σ = 2913774624. Its totient is φ = 1214072720.

The previous prime is 2003220019. The next prime is 2003220047. The reversal of 2003220021 is 1200223002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003220021 - 2¹ = 2003220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003219979 and 2003220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003220061) 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 7 ways as a sum of consecutive naturals, for example, 30351786 + ... + 30351851.

It is an arithmetic number, because the mean of its divisors is an integer number (364221828).

Almost surely, 2^2003220021 is an apocalyptic number.

It is an amenable number.

2003220021 is a deficient number, since it is larger than the sum of its proper divisors (910554603).

2003220021 is a wasteful number, since it uses less digits than its factorization.

2003220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60703651.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2003220021 is about 44757.3460004053. The cubic root of 2003220021 is about 1260.5968493829.

Adding to 2003220021 its reverse (1200223002), we get a palindrome (3203443023).

The spelling of 2003220021 in words is "two billion, three million, two hundred twenty thousand, twenty-one".