21102112200112 has 40 divisors (see below), whose sum is σ = 41379032666160. Its totient is φ = 10423658891520.

The previous prime is 21102112200109. The next prime is 21102112200227. The reversal of 21102112200112 is 21100221120112.

It is a super-2 number, since 2×21102112200112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 55508214 + ... + 55887082.

It is an arithmetic number, because the mean of its divisors is an integer number (1034475816654).

Almost surely, 2^{21102112200112} is an apocalyptic number.

It is an amenable number.

21102112200112 is a deficient number, since it is larger than the sum of its proper divisors (20276920466048).

21102112200112 is a wasteful number, since it uses less digits than its factorization.

21102112200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420901 (or 420895 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21102112200112 its reverse (21100221120112), we get a palindrome (42202333320224).

The spelling of 21102112200112 in words is "twenty-one trillion, one hundred two billion, one hundred twelve million, two hundred thousand, one hundred twelve".