111122220012 has 24 divisors (see below), whose sum is σ = 259466158896. Its totient is φ = 37014885888.

The previous prime is 111122219959. The next prime is 111122220017. The reversal of 111122220012 is 210022221111.

It is a junction number, because it is equal to n+sod(n) for n = 111122219973 and 111122220000.

It is not an unprimeable number, because it can be changed into a prime (111122220017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213853 + ... + 3248244.

It is an arithmetic number, because the mean of its divisors is an integer number (10811089954).

Almost surely, 2^111122220012 is an apocalyptic number.

111122220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111122220012 is an abundant number, since it is smaller than the sum of its proper divisors (148343938884).

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

111122220012 is a wasteful number, since it uses less digits than its factorization.

111122220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463537 (or 6463535 counting only the distinct ones).

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

Adding to 111122220012 its reverse (210022221111), we get a palindrome (321144441123).

The spelling of 111122220012 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, twelve".