21010110120112 has 40 divisors (see below), whose sum is σ = 41377927219056. Its totient is φ = 10332415585536.

The previous prime is 21010110120071. The next prime is 21010110120113. The reversal of 21010110120112 is 21102101101012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010110120092 and 21010110120101.

It is not an unprimeable number, because it can be changed into a prime (21010110120113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14306863 + ... + 15706894.

Almost surely, 2^{21010110120112} is an apocalyptic number.

It is an amenable number.

21010110120112 is a deficient number, since it is larger than the sum of its proper divisors (20367817098944).

21010110120112 is a wasteful number, since it uses less digits than its factorization.

21010110120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30014485 (or 30014479 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21010110120112 its reverse (21102101101012), we get a palindrome (42112211221124).

The spelling of 21010110120112 in words is "twenty-one trillion, ten billion, one hundred ten million, one hundred twenty thousand, one hundred twelve".