21112102110201 has 16 divisors (see below), whose sum is σ = 28942448011008. Its totient is φ = 13680778953600.

The previous prime is 21112102110167. The next prime is 21112102110217. The reversal of 21112102110201 is 10201120121112.

It is a happy number.

It is not a de Polignac number, because 21112102110201 - 2²⁵ = 21112068555769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112102110271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316651366 + ... + 316718031.

It is an arithmetic number, because the mean of its divisors is an integer number (1808903000688).

Almost surely, 2^{21112102110201} is an apocalyptic number.

It is an amenable number.

21112102110201 is a deficient number, since it is larger than the sum of its proper divisors (7830345900807).

21112102110201 is a wasteful number, since it uses less digits than its factorization.

21112102110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633369712.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21112102110201 its reverse (10201120121112), we get a palindrome (31313222231313).

The spelling of 21112102110201 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, one hundred ten thousand, two hundred one".