343040334012221 has 16 divisors (see below), whose sum is σ = 344621478190080. Its totient is φ = 341461860830640.

The previous prime is 343040334012209. The next prime is 343040334012223. The reversal of 343040334012221 is 122210433040343.

It is a cyclic number.

It is not a de Polignac number, because 343040334012221 - 2⁶ = 343040334012157 is a prime.

It is a super-3 number, since 3×343040334012221³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343040334012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2917670366 + ... + 2917787936.

It is an arithmetic number, because the mean of its divisors is an integer number (21538842386880).

Almost surely, 2^{343040334012221} is an apocalyptic number.

It is an amenable number.

343040334012221 is a deficient number, since it is larger than the sum of its proper divisors (1581144177859).

343040334012221 is a wasteful number, since it uses less digits than its factorization.

343040334012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128816.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 343040334012221 its reverse (122210433040343), we get a palindrome (465250767052564).

The spelling of 343040334012221 in words is "three hundred forty-three trillion, forty billion, three hundred thirty-four million, twelve thousand, two hundred twenty-one".