3340220421 has 4 divisors (see below), whose sum is σ = 4453627232. Its totient is φ = 2226813612.

The previous prime is 3340220419. The next prime is 3340220423. The reversal of 3340220421 is 1240220433.

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 an interprime number because it is at equal distance from previous prime (3340220419) and next prime (3340220423).

It is not a de Polignac number, because 3340220421 - 2¹ = 3340220419 is a prime.

It is a super-2 number, since 2×3340220421² = 22314144921730834482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3340220423) 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, 556703401 + ... + 556703406.

It is an arithmetic number, because the mean of its divisors is an integer number (1113406808).

Almost surely, 2^3340220421 is an apocalyptic number.

It is an amenable number.

3340220421 is a deficient number, since it is larger than the sum of its proper divisors (1113406811).

3340220421 is a wasteful number, since it uses less digits than its factorization.

3340220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113406810.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3340220421 is about 57794.6400715499. The cubic root of 3340220421 is about 1494.8296687036.

Adding to 3340220421 its reverse (1240220433), we get a palindrome (4580440854).

The spelling of 3340220421 in words is "three billion, three hundred forty million, two hundred twenty thousand, four hundred twenty-one".