343111021221 has 8 divisors (see below), whose sum is σ = 457496005824. Its totient is φ = 228733358720.

The previous prime is 343111021153. The next prime is 343111021237. The reversal of 343111021221 is 122120111343.

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 343111021221 - 2⁷ = 343111021093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343111021241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720236 + ... + 1909301.

It is an arithmetic number, because the mean of its divisors is an integer number (57187000728).

Almost surely, 2^343111021221 is an apocalyptic number.

It is an amenable number.

343111021221 is a deficient number, since it is larger than the sum of its proper divisors (114384984603).

343111021221 is a wasteful number, since it uses less digits than its factorization.

343111021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661051.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 343111021221 its reverse (122120111343), we get a palindrome (465231132564).

The spelling of 343111021221 in words is "three hundred forty-three billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".