3320003021 has 4 divisors (see below), whose sum is σ = 3323334012. Its totient is φ = 3316672032.

The previous prime is 3320003009. The next prime is 3320003023. The reversal of 3320003021 is 1203000233.

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 1976780521 + 1343222500 = 44461^2 + 36650^2 .

It is a cyclic number.

It is not a de Polignac number, because 3320003021 - 2⁶ = 3320002957 is a prime.

It is a super-2 number, since 2×3320003021² = 22044840118898252882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3320002987 and 3320003005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3320003023) 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, 1664000 + ... + 1665993.

It is an arithmetic number, because the mean of its divisors is an integer number (830833503).

Almost surely, 2^3320003021 is an apocalyptic number.

It is an amenable number.

3320003021 is a deficient number, since it is larger than the sum of its proper divisors (3330991).

3320003021 is an equidigital number, since it uses as much as digits as its factorization.

3320003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330990.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 3320003021 is about 57619.4673786560. The cubic root of 3320003021 is about 1491.8076376631.

Adding to 3320003021 its reverse (1203000233), we get a palindrome (4523003254).

The spelling of 3320003021 in words is "three billion, three hundred twenty million, three thousand, twenty-one".