21010122202112 has 22 divisors (see below), whose sum is σ = 41999726708808. Its totient is φ = 10505061100544.

The previous prime is 21010122202109. The next prime is 21010122202229. The reversal of 21010122202112 is 21120222101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10258847708 + ... + 10258849755.

It is an arithmetic number, because the mean of its divisors is an integer number (1909078486764).

Almost surely, 2^{21010122202112} is an apocalyptic number.

It is an amenable number.

21010122202112 is a deficient number, since it is larger than the sum of its proper divisors (20989604506696).

21010122202112 is an equidigital number, since it uses as much as digits as its factorization.

21010122202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20517697483 (or 20517697465 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21010122202112 its reverse (21120222101012), we get a palindrome (42130344303124).

The spelling of 21010122202112 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, two hundred two thousand, one hundred twelve".