34000123121 has 4 divisors (see below), whose sum is σ = 34641634932. Its totient is φ = 33358611312.

The previous prime is 34000123117. The next prime is 34000123123. The reversal of 34000123121 is 12132100043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12132100043 = 7 ⋅1733157149.

It can be written as a sum of positive squares in 2 ways, for example, as 12574482496 + 21425640625 = 112136^2 + 146375^2 .

It is a cyclic number.

It is not a de Polignac number, because 34000123121 - 2² = 34000123117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 34000123121.

It is not an unprimeable number, because it can be changed into a prime (34000123123) 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 3 ways as a sum of consecutive naturals, for example, 320755826 + ... + 320755931.

It is an arithmetic number, because the mean of its divisors is an integer number (8660408733).

Almost surely, 2^34000123121 is an apocalyptic number.

It is an amenable number.

34000123121 is a deficient number, since it is larger than the sum of its proper divisors (641511811).

34000123121 is an equidigital number, since it uses as much as digits as its factorization.

34000123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641511810.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 34000123121 its reverse (12132100043), we get a palindrome (46132223164).

The spelling of 34000123121 in words is "thirty-four billion, one hundred twenty-three thousand, one hundred twenty-one".