121243422423 has 8 divisors (see below), whose sum is σ = 161685417600. Its totient is φ = 80815187768.

The previous prime is 121243422409. The next prime is 121243422457. The reversal of 121243422423 is 324224342121.

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 121243422423 - 2²⁵ = 121209867991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121243422403) 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 7 ways as a sum of consecutive naturals, for example, 3419553 + ... + 3454826.

It is an arithmetic number, because the mean of its divisors is an integer number (20210677200).

Almost surely, 2^121243422423 is an apocalyptic number.

121243422423 is a deficient number, since it is larger than the sum of its proper divisors (40441995177).

121243422423 is an equidigital number, since it uses as much as digits as its factorization.

121243422423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880261.

The product of its digits is 18432, while the sum is 30.

Adding to 121243422423 its reverse (324224342121), we get a palindrome (445467764544).

The spelling of 121243422423 in words is "one hundred twenty-one billion, two hundred forty-three million, four hundred twenty-two thousand, four hundred twenty-three".