121332321243 has 48 divisors (see below), whose sum is σ = 204137856000. Its totient is φ = 68012239680.

The previous prime is 121332321241. The next prime is 121332321251. The reversal of 121332321243 is 342123233121.

121332321243 is a `hidden beast` number, since 1 + 2 + 1 + 332 + 321 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 121332321243 - 2¹ = 121332321241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121332321241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 821973 + ... + 958281.

It is an arithmetic number, because the mean of its divisors is an integer number (4252872000).

Almost surely, 2^121332321243 is an apocalyptic number.

121332321243 is a deficient number, since it is larger than the sum of its proper divisors (82805534757).

121332321243 is a wasteful number, since it uses less digits than its factorization.

121332321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136592 (or 136589 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 121332321243 its reverse (342123233121), we get a palindrome (463455554364).

The spelling of 121332321243 in words is "one hundred twenty-one billion, three hundred thirty-two million, three hundred twenty-one thousand, two hundred forty-three".