121353230423 has 16 divisors (see below), whose sum is σ = 128819113920. Its totient is φ = 113924123136.

The previous prime is 121353230417. The next prime is 121353230431. The reversal of 121353230423 is 324032353121.

It is a happy number.

It is not a de Polignac number, because 121353230423 - 2¹⁰ = 121353229399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121353230473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11446361 + ... + 11456957.

It is an arithmetic number, because the mean of its divisors is an integer number (8051194620).

Almost surely, 2^121353230423 is an apocalyptic number.

121353230423 is a deficient number, since it is larger than the sum of its proper divisors (7465883497).

121353230423 is a wasteful number, since it uses less digits than its factorization.

121353230423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12266.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 121353230423 its reverse (324032353121), we get a palindrome (445385583544).

The spelling of 121353230423 in words is "one hundred twenty-one billion, three hundred fifty-three million, two hundred thirty thousand, four hundred twenty-three".