121340425441121 has 4 divisors (see below), whose sum is σ = 121435296768000. Its totient is φ = 121245554114244.

The previous prime is 121340425441097. The next prime is 121340425441139. The reversal of 121340425441121 is 121144524043121.

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 121340425441121 - 2²⁶ = 121340358332257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121340425441321) 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, 47435661521 + ... + 47435664078.

It is an arithmetic number, because the mean of its divisors is an integer number (30358824192000).

Almost surely, 2^{121340425441121} is an apocalyptic number.

It is an amenable number.

121340425441121 is a deficient number, since it is larger than the sum of its proper divisors (94871326879).

121340425441121 is an equidigital number, since it uses as much as digits as its factorization.

121340425441121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94871326878.

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 121340425441121 its reverse (121144524043121), we get a palindrome (242484949484242).

The spelling of 121340425441121 in words is "one hundred twenty-one trillion, three hundred forty billion, four hundred twenty-five million, four hundred forty-one thousand, one hundred twenty-one".