223111243100 has 72 divisors (see below), whose sum is σ = 490007700000. Its totient is φ = 88166707200.

The previous prime is 223111243097. The next prime is 223111243111. The reversal of 223111243100 is 1342111322.

It is a super-3 number, since 3×223111243100³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11106065 + ... + 11126135.

It is an arithmetic number, because the mean of its divisors is an integer number (6805662500).

Almost surely, 2^223111243100 is an apocalyptic number.

223111243100 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 223111243100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245003850000).

223111243100 is an abundant number, since it is smaller than the sum of its proper divisors (266896456900).

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

223111243100 is a wasteful number, since it uses less digits than its factorization.

223111243100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21423 (or 21416 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 223111243100 its reverse (1342111322), we get a palindrome (224453354422).

The spelling of 223111243100 in words is "two hundred twenty-three billion, one hundred eleven million, two hundred forty-three thousand, one hundred".