121431242134121 has 16 divisors (see below), whose sum is σ = 128097621288000. Its totient is φ = 114792543019008.

The previous prime is 121431242134087. The next prime is 121431242134133.

121431242134121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 121431242134121 - 2²⁶ = 121431175025257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121431242134151) 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 15 ways as a sum of consecutive naturals, for example, 26285705 + ... + 30558153.

It is an arithmetic number, because the mean of its divisors is an integer number (8006101330500).

Almost surely, 2^{121431242134121} is an apocalyptic number.

It is an amenable number.

121431242134121 is a deficient number, since it is larger than the sum of its proper divisors (6666379153879).

121431242134121 is a wasteful number, since it uses less digits than its factorization.

121431242134121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275688.

The product of its digits is 9216, while the sum is 32.

The spelling of 121431242134121 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, two hundred forty-two million, one hundred thirty-four thousand, one hundred twenty-one".