23111321143221 has 48 divisors (see below), whose sum is σ = 36488079313920. Its totient is φ = 14033002913280.

The previous prime is 23111321143217. The next prime is 23111321143237. The reversal of 23111321143221 is 12234112311132.

23111321143221 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 1 + 321 + 14 + 322 + 1 = 666.

It is not a de Polignac number, because 23111321143221 - 2² = 23111321143217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111321143271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218993215 + ... + 219098723.

It is an arithmetic number, because the mean of its divisors is an integer number (760168319040).

Almost surely, 2^{23111321143221} is an apocalyptic number.

It is an amenable number.

23111321143221 is a deficient number, since it is larger than the sum of its proper divisors (13376758170699).

23111321143221 is a wasteful number, since it uses less digits than its factorization.

23111321143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151746 (or 151743 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 23111321143221 its reverse (12234112311132), we get a palindrome (35345433454353).

The spelling of 23111321143221 in words is "twenty-three trillion, one hundred eleven billion, three hundred twenty-one million, one hundred forty-three thousand, two hundred twenty-one".