121341423320143 has 4 divisors (see below), whose sum is σ = 130675378960168. Its totient is φ = 112007467680120.

The previous prime is 121341423320011. The next prime is 121341423320267. The reversal of 121341423320143 is 341023324143121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121341423320143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121341423320099 and 121341423320108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121341423320743) 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, 4666977819993 + ... + 4666977820018.

It is an arithmetic number, because the mean of its divisors is an integer number (32668844740042).

Almost surely, 2^{121341423320143} is an apocalyptic number.

121341423320143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121341423320143 is a deficient number, since it is larger than the sum of its proper divisors (9333955640025).

121341423320143 is an equidigital number, since it uses as much as digits as its factorization.

121341423320143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333955640024.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 121341423320143 its reverse (341023324143121), we get a palindrome (462364747463264).

The spelling of 121341423320143 in words is "one hundred twenty-one trillion, three hundred forty-one billion, four hundred twenty-three million, three hundred twenty thousand, one hundred forty-three".