111030031212 has 48 divisors (see below), whose sum is σ = 260047196640. Its totient is φ = 36870640128.

The previous prime is 111030031199. The next prime is 111030031223. The reversal of 111030031212 is 212130030111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111030031191 and 111030031200.

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 15 ways as a sum of consecutive naturals, for example, 4252614 + ... + 4278642.

It is an arithmetic number, because the mean of its divisors is an integer number (5417649930).

Almost surely, 2^111030031212 is an apocalyptic number.

111030031212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111030031212 is an abundant number, since it is smaller than the sum of its proper divisors (149017165428).

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

111030031212 is a wasteful number, since it uses less digits than its factorization.

111030031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27362 (or 27360 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111030031212 its reverse (212130030111), we get a palindrome (323160061323).

The spelling of 111030031212 in words is "one hundred eleven billion, thirty million, thirty-one thousand, two hundred twelve".