111122101121012 has 48 divisors (see below), whose sum is σ = 205977409666560. Its totient is φ = 52308021937248.

The previous prime is 111122101120957. The next prime is 111122101121033. The reversal of 111122101121012 is 210121101221111.

It is a congruent number.

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, 111528713 + ... + 112520655.

It is an arithmetic number, because the mean of its divisors is an integer number (4291196034720).

Almost surely, 2^{111122101121012} is an apocalyptic number.

It is an amenable number.

111122101121012 is a deficient number, since it is larger than the sum of its proper divisors (94855308545548).

111122101121012 is a wasteful number, since it uses less digits than its factorization.

111122101121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001172 (or 1001170 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111122101121012 its reverse (210121101221111), we get a palindrome (321243202342123).

The spelling of 111122101121012 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, twelve".