121340424401 has 4 divisors (see below), whose sum is σ = 138674770752. Its totient is φ = 104006078052.

The previous prime is 121340424371. The next prime is 121340424407. The reversal of 121340424401 is 104424043121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104424043121 = 41 ⋅2546927881.

It is a cyclic number.

It is not a de Polignac number, because 121340424401 - 2²² = 121336230097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121340424407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8667173165 + ... + 8667173178.

It is an arithmetic number, because the mean of its divisors is an integer number (34668692688).

Almost surely, 2^121340424401 is an apocalyptic number.

It is an amenable number.

121340424401 is a deficient number, since it is larger than the sum of its proper divisors (17334346351).

121340424401 is an equidigital number, since it uses as much as digits as its factorization.

121340424401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17334346350.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121340424401 its reverse (104424043121), we get a palindrome (225764467522).

The spelling of 121340424401 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-four thousand, four hundred one".