3240002021 has 2 divisors, whose sum is σ = 3240002022. Its totient is φ = 3240002020.

The previous prime is 3240001993. The next prime is 3240002023. The reversal of 3240002021 is 1202000423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2687281921 + 552720100 = 51839^2 + 23510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3240002021 is a prime.

It is a super-2 number, since 2×3240002021² = 20995226192168168882, which contains 22 as substring.

Together with 3240002023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3240001987 and 3240002005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3240002023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620001010 + 1620001011.

It is an arithmetic number, because the mean of its divisors is an integer number (1620001011).

Almost surely, 2^3240002021 is an apocalyptic number.

It is an amenable number.

3240002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240002021 is an equidigital number, since it uses as much as digits as its factorization.

3240002021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 3240002021 is about 56921.0156357035. The cubic root of 3240002021 is about 1479.7275522658.

Adding to 3240002021 its reverse (1202000423), we get a palindrome (4442002444).

The spelling of 3240002021 in words is "three billion, two hundred forty million, two thousand, twenty-one".