121355323203 has 8 divisors (see below), whose sum is σ = 163042266816. Its totient is φ = 80285964200.

The previous prime is 121355323189. The next prime is 121355323211. The reversal of 121355323203 is 302323553121.

It is a happy number.

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 121355323203 - 2⁶ = 121355323139 is a prime.

It is a super-2 number, since 2×121355323203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121355323273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154395693 + ... + 154396478.

It is an arithmetic number, because the mean of its divisors is an integer number (20380283352).

Almost surely, 2^121355323203 is an apocalyptic number.

121355323203 is a deficient number, since it is larger than the sum of its proper divisors (41686943613).

121355323203 is a wasteful number, since it uses less digits than its factorization.

121355323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308792305.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 121355323203 its reverse (302323553121), we get a palindrome (423678876324).

The spelling of 121355323203 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred twenty-three thousand, two hundred three".