121433415503405 has 4 divisors (see below), whose sum is σ = 145720098604092. Its totient is φ = 97146732402720.

The previous prime is 121433415503401. The next prime is 121433415503501. The reversal of 121433415503405 is 504305514334121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41795746591369 + 79637668912036 = 6464963^2 + 8923994^2 .

It is not a de Polignac number, because 121433415503405 - 2² = 121433415503401 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 (121433415503401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12143341550336 + ... + 12143341550345.

It is an arithmetic number, because the mean of its divisors is an integer number (36430024651023).

Almost surely, 2^{121433415503405} is an apocalyptic number.

It is an amenable number.

121433415503405 is a deficient number, since it is larger than the sum of its proper divisors (24286683100687).

121433415503405 is an equidigital number, since it uses as much as digits as its factorization.

121433415503405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24286683100686.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 121433415503405 its reverse (504305514334121), we get a palindrome (625738929837526).

The spelling of 121433415503405 in words is "one hundred twenty-one trillion, four hundred thirty-three billion, four hundred fifteen million, five hundred three thousand, four hundred five".