23111333221100 has 144 divisors (see below), whose sum is σ = 52641404234496. Its totient is φ = 8795758464000.

The previous prime is 23111333221073. The next prime is 23111333221103. The reversal of 23111333221100 is 112233311132.

It is not an unprimeable number, because it can be changed into a prime (23111333221103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 445682774 + ... + 445734626.

It is an arithmetic number, because the mean of its divisors is an integer number (365565307184).

Almost surely, 2^{23111333221100} is an apocalyptic number.

23111333221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23111333221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26320702117248).

23111333221100 is an abundant number, since it is smaller than the sum of its proper divisors (29530071013396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23111333221100 is a wasteful number, since it uses less digits than its factorization.

23111333221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54316 (or 54309 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 23111333221100 its reverse (112233311132), we get a palindrome (23223566532232).

The spelling of 23111333221100 in words is "twenty-three trillion, one hundred eleven billion, three hundred thirty-three million, two hundred twenty-one thousand, one hundred".