3340213421 has 2 divisors, whose sum is σ = 3340213422. Its totient is φ = 3340213420.

The previous prime is 3340213403. The next prime is 3340213423. The reversal of 3340213421 is 1243120433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3060855625 + 279357796 = 55325^2 + 16714^2 .

It is an emirp because it is prime and its reverse (1243120433) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3340213421 is a prime.

It is a super-2 number, since 2×3340213421² = 22314051395657046482, which contains 22 as substring.

Together with 3340213423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3340213423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670106710 + 1670106711.

It is an arithmetic number, because the mean of its divisors is an integer number (1670106711).

Almost surely, 2^3340213421 is an apocalyptic number.

It is an amenable number.

3340213421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3340213421 is an equidigital number, since it uses as much as digits as its factorization.

3340213421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3340213421 is about 57794.5795122691. The cubic root of 3340213421 is about 1494.8286244796.

Adding to 3340213421 its reverse (1243120433), we get a palindrome (4583333854).

The spelling of 3340213421 in words is "three billion, three hundred forty million, two hundred thirteen thousand, four hundred twenty-one".