111212313320 has 16 divisors (see below), whose sum is σ = 250227705060. Its totient is φ = 44484925312.

The previous prime is 111212313319. The next prime is 111212313323. The reversal of 111212313320 is 23313212111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102988362724 + 8223950596 = 320918^2 + 90686^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 111212313292 and 111212313301.

It is not an unprimeable number, because it can be changed into a prime (111212313323) 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 3 ways as a sum of consecutive naturals, for example, 1390153877 + ... + 1390153956.

Almost surely, 2^111212313320 is an apocalyptic number.

111212313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212313320 is an abundant number, since it is smaller than the sum of its proper divisors (139015391740).

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

111212313320 is a wasteful number, since it uses less digits than its factorization.

111212313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780307844 (or 2780307840 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111212313320 its reverse (23313212111), we get a palindrome (134525525431).

The spelling of 111212313320 in words is "one hundred eleven billion, two hundred twelve million, three hundred thirteen thousand, three hundred twenty".