3421338733721 has 8 divisors (see below), whose sum is σ = 3508631664384. Its totient is φ = 3334649906880.

The previous prime is 3421338733661. The next prime is 3421338733739. The reversal of 3421338733721 is 1273378331243.

3421338733721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3421338733721 - 2¹⁴ = 3421338717337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3421338738721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151014485 + ... + 151037138.

It is an arithmetic number, because the mean of its divisors is an integer number (438578958048).

Almost surely, 2^{3421338733721} is an apocalyptic number.

It is an amenable number.

3421338733721 is a deficient number, since it is larger than the sum of its proper divisors (87292930663).

3421338733721 is a wasteful number, since it uses less digits than its factorization.

3421338733721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302051911.

The product of its digits is 1524096, while the sum is 47.

The spelling of 3421338733721 in words is "three trillion, four hundred twenty-one billion, three hundred thirty-eight million, seven hundred thirty-three thousand, seven hundred twenty-one".