2134243012321 has 4 divisors (see below), whose sum is σ = 2439134871232. Its totient is φ = 1829351153412.

The previous prime is 2134243012261. The next prime is 2134243012367. The reversal of 2134243012321 is 1232103424312.

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 2134243012321 - 2²³ = 2134234623713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2134243012321.

It is not an unprimeable number, because it can be changed into a prime (2134243012721) 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, 152445929445 + ... + 152445929458.

It is an arithmetic number, because the mean of its divisors is an integer number (609783717808).

Almost surely, 2^{2134243012321} is an apocalyptic number.

It is an amenable number.

2134243012321 is a deficient number, since it is larger than the sum of its proper divisors (304891858911).

2134243012321 is an equidigital number, since it uses as much as digits as its factorization.

2134243012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304891858910.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2134243012321 its reverse (1232103424312), we get a palindrome (3366346436633).

The spelling of 2134243012321 in words is "two trillion, one hundred thirty-four billion, two hundred forty-three million, twelve thousand, three hundred twenty-one".