121124241243 has 40 divisors (see below), whose sum is σ = 183146579616. Its totient is φ = 79770096000.

The previous prime is 121124241179. The next prime is 121124241247. The reversal of 121124241243 is 342142421121.

121124241243 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 242 + 412 + 4 + 3 = 666.

It is not a de Polignac number, because 121124241243 - 2⁶ = 121124241179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121124241247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2186455 + ... + 2241167.

Almost surely, 2^121124241243 is an apocalyptic number.

121124241243 is a deficient number, since it is larger than the sum of its proper divisors (62022338373).

121124241243 is a wasteful number, since it uses less digits than its factorization.

121124241243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55057 (or 55048 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 121124241243 its reverse (342142421121), we get a palindrome (463266662364).

The spelling of 121124241243 in words is "one hundred twenty-one billion, one hundred twenty-four million, two hundred forty-one thousand, two hundred forty-three".