121451435121 has 8 divisors (see below), whose sum is σ = 162393988320. Its totient is φ = 80738252672.

The previous prime is 121451435111. The next prime is 121451435137. The reversal of 121451435121 is 121534154121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121451435121 - 2¹¹ = 121451433073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121451435101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57341451 + ... + 57343568.

It is an arithmetic number, because the mean of its divisors is an integer number (20299248540).

Almost surely, 2^121451435121 is an apocalyptic number.

It is an amenable number.

121451435121 is a deficient number, since it is larger than the sum of its proper divisors (40942553199).

121451435121 is a wasteful number, since it uses less digits than its factorization.

121451435121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114685375.

The product of its digits is 4800, while the sum is 30.

Adding to 121451435121 its reverse (121534154121), we get a palindrome (242985589242).

The spelling of 121451435121 in words is "one hundred twenty-one billion, four hundred fifty-one million, four hundred thirty-five thousand, one hundred twenty-one".