121242142412303 has 32 divisors (see below), whose sum is σ = 134601968616192. Its totient is φ = 108281121062400.

The previous prime is 121242142412297. The next prime is 121242142412317. The reversal of 121242142412303 is 303214241242121.

It is not a de Polignac number, because 121242142412303 - 2²² = 121242138217999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121242142412303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121242142412803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636269600 + ... + 636460122.

It is an arithmetic number, because the mean of its divisors is an integer number (4206311519256).

Almost surely, 2^{121242142412303} is an apocalyptic number.

121242142412303 is a deficient number, since it is larger than the sum of its proper divisors (13359826203889).

121242142412303 is a wasteful number, since it uses less digits than its factorization.

121242142412303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192935.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 121242142412303 its reverse (303214241242121), we get a palindrome (424456383654424).

The spelling of 121242142412303 in words is "one hundred twenty-one trillion, two hundred forty-two billion, one hundred forty-two million, four hundred twelve thousand, three hundred three".