21112200121112 has 96 divisors (see below), whose sum is σ = 41559434716800. Its totient is φ = 10053228100608.

The previous prime is 21112200121007. The next prime is 21112200121121. The reversal of 21112200121112 is 21112100221112.

It is a congruent number.

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, 163472948 + ... + 163602044.

It is an arithmetic number, because the mean of its divisors is an integer number (432910778300).

Almost surely, 2^{21112200121112} is an apocalyptic number.

It is an amenable number.

21112200121112 is a deficient number, since it is larger than the sum of its proper divisors (20447234595688).

21112200121112 is a wasteful number, since it uses less digits than its factorization.

21112200121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129493 (or 129460 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21112200121112 its reverse (21112100221112), we get a palindrome (42224300342224).

The spelling of 21112200121112 in words is "twenty-one trillion, one hundred twelve billion, two hundred million, one hundred twenty-one thousand, one hundred twelve".