21010122110012 has 24 divisors (see below), whose sum is σ = 42020877934560. Its totient is φ = 9004202251200.

The previous prime is 21010122109993. The next prime is 21010122110099. The reversal of 21010122110012 is 21001122101012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 3757187 + ... + 7492442.

It is an arithmetic number, because the mean of its divisors is an integer number (1750869913940).

Almost surely, 2^{21010122110012} is an apocalyptic number.

It is an amenable number.

21010122110012 is an abundant number, since it is smaller than the sum of its proper divisors (21010755824548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010122110012 is a wasteful number, since it uses less digits than its factorization.

21010122110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316341 (or 11316339 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010122110012 its reverse (21001122101012), we get a palindrome (42011244211024).

The spelling of 21010122110012 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, one hundred ten thousand, twelve".