111021222012 has 96 divisors (see below), whose sum is σ = 267483955200. Its totient is φ = 35819340480.

The previous prime is 111021222007. The next prime is 111021222041. The reversal of 111021222012 is 210222120111.

It is a junction number, because it is equal to n+sod(n) for n = 111021221982 and 111021222000.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 27003837 + ... + 27007947.

It is an arithmetic number, because the mean of its divisors is an integer number (2786291200).

Almost surely, 2^111021222012 is an apocalyptic number.

111021222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111021222012 is an abundant number, since it is smaller than the sum of its proper divisors (156462733188).

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

111021222012 is a wasteful number, since it uses less digits than its factorization.

111021222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4621 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111021222012 its reverse (210222120111), we get a palindrome (321243342123).

The spelling of 111021222012 in words is "one hundred eleven billion, twenty-one million, two hundred twenty-two thousand, twelve".