223111012320 has 576 divisors, whose sum is σ = 897747701760. Its totient is φ = 49391161344.

The previous prime is 223111012261. The next prime is 223111012367. The reversal of 223111012320 is 23210111322.

223111012320 is a `hidden beast` number, since 2 + 231 + 110 + 1 + 2 + 320 = 666.

It is a super-3 number, since 3×223111012320³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 223111012293 and 223111012302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 89136189 + ... + 89138691.

It is an arithmetic number, because the mean of its divisors is an integer number (1558589760).

Almost surely, 2^223111012320 is an apocalyptic number.

223111012320 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 223111012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448873850880).

223111012320 is an abundant number, since it is smaller than the sum of its proper divisors (674636689440).

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

223111012320 is a wasteful number, since it uses less digits than its factorization.

223111012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 223111012320 its reverse (23210111322), we get a palindrome (246321123642).

The spelling of 223111012320 in words is "two hundred twenty-three billion, one hundred eleven million, twelve thousand, three hundred twenty".