111122212320 has 144 divisors (see below), whose sum is σ = 433376667360. Its totient is φ = 25399360512.

The previous prime is 111122212319. The next prime is 111122212363. The reversal of 111122212320 is 23212221111.

111122212320 is a `hidden beast` number, since 1 + 11 + 122 + 212 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 = 111122212293 and 111122212302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5501935 + ... + 5522094.

It is an arithmetic number, because the mean of its divisors is an integer number (3009560190).

Almost surely, 2^111122212320 is an apocalyptic number.

111122212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122212320 is an abundant number, since it is smaller than the sum of its proper divisors (322254455040).

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

111122212320 is a wasteful number, since it uses less digits than its factorization.

111122212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11024057 (or 11024046 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111122212320 its reverse (23212221111), we get a palindrome (134334433431).

The spelling of 111122212320 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, three hundred twenty".