340344210121 has 4 divisors (see below), whose sum is σ = 340353078912. Its totient is φ = 340335341332.

The previous prime is 340344210113. The next prime is 340344210139. The reversal of 340344210121 is 121012443043.

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 a cyclic number.

It is not a de Polignac number, because 340344210121 - 2³ = 340344210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340344210191) 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, 4376581 + ... + 4453666.

It is an arithmetic number, because the mean of its divisors is an integer number (85088269728).

Almost surely, 2^340344210121 is an apocalyptic number.

It is an amenable number.

340344210121 is a deficient number, since it is larger than the sum of its proper divisors (8868791).

340344210121 is an equidigital number, since it uses as much as digits as its factorization.

340344210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8868790.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 340344210121 its reverse (121012443043), we get a palindrome (461356653164).

The spelling of 340344210121 in words is "three hundred forty billion, three hundred forty-four million, two hundred ten thousand, one hundred twenty-one".