21110121201112 has 16 divisors (see below), whose sum is σ = 39581540334000. Its totient is φ = 10555043778720.

The previous prime is 21110121201107. The next prime is 21110121201121. The reversal of 21110121201112 is 21110212101112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4421437 + ... + 7859347.

It is an arithmetic number, because the mean of its divisors is an integer number (2473846270875).

Almost surely, 2^{21110121201112} is an apocalyptic number.

It is an amenable number.

21110121201112 is a deficient number, since it is larger than the sum of its proper divisors (18471419132888).

21110121201112 is a wasteful number, since it uses less digits than its factorization.

21110121201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205466 (or 4205462 counting only the distinct ones).

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

Adding to 21110121201112 its reverse (21110212101112), we get a palindrome (42220333302224).

The spelling of 21110121201112 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-one million, two hundred one thousand, one hundred twelve".