11323203031221 has 16 divisors (see below), whose sum is σ = 15141772438464. Its totient is φ = 7526733249024.

The previous prime is 11323203031157. The next prime is 11323203031237. The reversal of 11323203031221 is 12213030232311.

11323203031221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11323203031221 - 2⁶ = 11323203031157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11323203031191 and 11323203031200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323203031271) 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, 1011301 + ... + 4865093.

It is an arithmetic number, because the mean of its divisors is an integer number (946360777404).

Almost surely, 2^{11323203031221} is an apocalyptic number.

It is an amenable number.

11323203031221 is a deficient number, since it is larger than the sum of its proper divisors (3818569407243).

11323203031221 is a wasteful number, since it uses less digits than its factorization.

11323203031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856660.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 11323203031221 its reverse (12213030232311), we get a palindrome (23536233263532).

The spelling of 11323203031221 in words is "eleven trillion, three hundred twenty-three billion, two hundred three million, thirty-one thousand, two hundred twenty-one".