3321002021 has 4 divisors (see below), whose sum is σ = 3321553344. Its totient is φ = 3320450700.

The previous prime is 3321001997. The next prime is 3321002033. The reversal of 3321002021 is 1202001233.

It is a happy number.

3321002021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-3321002021 is a prime.

It is a super-2 number, since 2×3321002021² = 22058108846972168882, 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 = 3321001987 and 3321002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321002051) 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, 266525 + ... + 278706.

It is an arithmetic number, because the mean of its divisors is an integer number (830388336).

Almost surely, 2^3321002021 is an apocalyptic number.

It is an amenable number.

3321002021 is a deficient number, since it is larger than the sum of its proper divisors (551323).

3321002021 is an equidigital number, since it uses as much as digits as its factorization.

3321002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551322.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3321002021 is about 57628.1356717359. The cubic root of 3321002021 is about 1491.9572526248.

Adding to 3321002021 its reverse (1202001233), we get a palindrome (4523003254).

The spelling of 3321002021 in words is "three billion, three hundred twenty-one million, two thousand, twenty-one".