11323203212421 has 6 divisors (see below), whose sum is σ = 16355737973510. Its totient is φ = 7548802141608.

The previous prime is 11323203212401. The next prime is 11323203212471. The reversal of 11323203212421 is 12421230232311.

11323203212421 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 3 + 20 + 3 + 212 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11302606944225 + 20596268196 = 3361935^2 + 143514^2 .

It is not a de Polignac number, because 11323203212421 - 2⁵ = 11323203212389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323203212401) 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 5 ways as a sum of consecutive naturals, for example, 629066845126 + ... + 629066845143.

Almost surely, 2^{11323203212421} is an apocalyptic number.

It is an amenable number.

11323203212421 is a deficient number, since it is larger than the sum of its proper divisors (5032534761089).

11323203212421 is a wasteful number, since it uses less digits than its factorization.

11323203212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258133690275 (or 1258133690272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 11323203212421 its reverse (12421230232311), we get a palindrome (23744433444732).

The spelling of 11323203212421 in words is "eleven trillion, three hundred twenty-three billion, two hundred three million, two hundred twelve thousand, four hundred twenty-one".