121034140120243 has 16 divisors (see below), whose sum is σ = 142839920711680. Its totient is φ = 100359645926400.

The previous prime is 121034140120217. The next prime is 121034140120297. The reversal of 121034140120243 is 342021041430121.

It is a happy number.

It is not a de Polignac number, because 121034140120243 - 2³³ = 121025550185651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121034143120243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103128093 + ... + 104295118.

It is an arithmetic number, because the mean of its divisors is an integer number (8927495044480).

Almost surely, 2^{121034140120243} is an apocalyptic number.

121034140120243 is a deficient number, since it is larger than the sum of its proper divisors (21805780591437).

121034140120243 is a wasteful number, since it uses less digits than its factorization.

121034140120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207425938.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 121034140120243 its reverse (342021041430121), we get a palindrome (463055181550364).

The spelling of 121034140120243 in words is "one hundred twenty-one trillion, thirty-four billion, one hundred forty million, one hundred twenty thousand, two hundred forty-three".