121024012543323 has 4 divisors (see below), whose sum is σ = 161365350057768. Its totient is φ = 80682675028880.

The previous prime is 121024012543289. The next prime is 121024012543361. The reversal of 121024012543323 is 323345210420121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121024012543323 - 2¹⁶ = 121024012477787 is a prime.

It is a super-2 number, since 2×121024012543323² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121024012543363) 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 3 ways as a sum of consecutive naturals, for example, 20170668757218 + ... + 20170668757223.

It is an arithmetic number, because the mean of its divisors is an integer number (40341337514442).

Almost surely, 2^{121024012543323} is an apocalyptic number.

121024012543323 is a deficient number, since it is larger than the sum of its proper divisors (40341337514445).

121024012543323 is an equidigital number, since it uses as much as digits as its factorization.

121024012543323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40341337514444.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 121024012543323 its reverse (323345210420121), we get a palindrome (444369222963444).

The spelling of 121024012543323 in words is "one hundred twenty-one trillion, twenty-four billion, twelve million, five hundred forty-three thousand, three hundred twenty-three".