21112222120112 has 40 divisors (see below), whose sum is σ = 42057234123072. Its totient is φ = 10260642470400.

The previous prime is 21112222120097. The next prime is 21112222120123. The reversal of 21112222120112 is 21102122221112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59200943 + ... + 59556494.

Almost surely, 2^{21112222120112} is an apocalyptic number.

It is an amenable number.

21112222120112 is a deficient number, since it is larger than the sum of its proper divisors (20945012002960).

21112222120112 is a wasteful number, since it uses less digits than its factorization.

21112222120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118757757 (or 118757751 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21112222120112 its reverse (21102122221112), we get a palindrome (42214344341224).

The spelling of 21112222120112 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twelve".