343345101221 has 16 divisors (see below), whose sum is σ = 363781186560. Its totient is φ = 323547631680.

The previous prime is 343345101161. The next prime is 343345101233. The reversal of 343345101221 is 122101543343.

It is a cyclic number.

It is not a de Polignac number, because 343345101221 - 2⁶ = 343345101157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343348101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291215 + ... + 878348.

It is an arithmetic number, because the mean of its divisors is an integer number (22736324160).

Almost surely, 2^343345101221 is an apocalyptic number.

It is an amenable number.

343345101221 is a deficient number, since it is larger than the sum of its proper divisors (20436085339).

343345101221 is a wasteful number, since it uses less digits than its factorization.

343345101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169836.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 343345101221 its reverse (122101543343), we get a palindrome (465446644564).

The spelling of 343345101221 in words is "three hundred forty-three billion, three hundred forty-five million, one hundred one thousand, two hundred twenty-one".