23421123340121 has 4 divisors (see below), whose sum is σ = 25222748212452. Its totient is φ = 21619498467792.

The previous prime is 23421123340079. The next prime is 23421123340141. The reversal of 23421123340121 is 12104332112432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4290122130121 + 19131001210000 = 2071261^2 + 4373900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23421123340121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23421123340141) 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, 900812436146 + ... + 900812436171.

It is an arithmetic number, because the mean of its divisors is an integer number (6305687053113).

Almost surely, 2^{23421123340121} is an apocalyptic number.

It is an amenable number.

23421123340121 is a deficient number, since it is larger than the sum of its proper divisors (1801624872331).

23421123340121 is a wasteful number, since it uses less digits than its factorization.

23421123340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801624872330.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 23421123340121 its reverse (12104332112432), we get a palindrome (35525455452553).

The spelling of 23421123340121 in words is "twenty-three trillion, four hundred twenty-one billion, one hundred twenty-three million, three hundred forty thousand, one hundred twenty-one".