111321323220 has 24 divisors (see below), whose sum is σ = 311699705184. Its totient is φ = 29685686176.

The previous prime is 111321323203. The next prime is 111321323221. The reversal of 111321323220 is 22323123111.

It is a super-2 number, since 2×111321323220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321323221) 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 7 ways as a sum of consecutive naturals, for example, 927677634 + ... + 927677753.

It is an arithmetic number, because the mean of its divisors is an integer number (12987487716).

Almost surely, 2^111321323220 is an apocalyptic number.

111321323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111321323220 is an abundant number, since it is smaller than the sum of its proper divisors (200378381964).

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

111321323220 is a wasteful number, since it uses less digits than its factorization.

111321323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855355399 (or 1855355397 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 111321323220 its reverse (22323123111), we get a palindrome (133644446331).

The spelling of 111321323220 in words is "one hundred eleven billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty".