111222122001012 has 72 divisors (see below), whose sum is σ = 306748124242560. Its totient is φ = 33698761585920.

The previous prime is 111222122000867. The next prime is 111222122001013. The reversal of 111222122001012 is 210100221222111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222122001013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17744437 + ... + 23179932.

It is an arithmetic number, because the mean of its divisors is an integer number (4260390614480).

Almost surely, 2^{111222122001012} is an apocalyptic number.

111222122001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222122001012 is an abundant number, since it is smaller than the sum of its proper divisors (195526002241548).

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

111222122001012 is a wasteful number, since it uses less digits than its factorization.

111222122001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40931253 (or 40931248 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222122001012 its reverse (210100221222111), we get a palindrome (321322343223123).

The spelling of 111222122001012 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one thousand, twelve".