112221201222018 has 48 divisors (see below), whose sum is σ = 277980278374656. Its totient is φ = 32051753193600.

The previous prime is 112221201221923. The next prime is 112221201222043. The reversal of 112221201222018 is 810222102122211.

It is a happy number.

112221201222018 is a `hidden beast` number, since 1 + 1 + 2 + 221 + 201 + 2 + 220 + 18 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 112221201221982 and 112221201222000.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158633946 + ... + 159339797.

It is an arithmetic number, because the mean of its divisors is an integer number (5791255799472).

Almost surely, 2^{112221201222018} is an apocalyptic number.

112221201222018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

112221201222018 is an abundant number, since it is smaller than the sum of its proper divisors (165759077152638).

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

112221201222018 is a wasteful number, since it uses less digits than its factorization.

112221201222018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317976559 (or 317976556 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

Adding to 112221201222018 its reverse (810222102122211), we get a palindrome (922443303344229).

The spelling of 112221201222018 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, eighteen".