21112110212101 has 8 divisors (see below), whose sum is σ = 21379862336000. Its totient is φ = 20844370843920.

The previous prime is 21112110212077. The next prime is 21112110212117. The reversal of 21112110212101 is 10121201121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21112110212101 - 2⁹ = 21112110211589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112110212131) 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, 164500 + ... + 6500098.

It is an arithmetic number, because the mean of its divisors is an integer number (2672482792000).

Almost surely, 2^{21112110212101} is an apocalyptic number.

It is an amenable number.

21112110212101 is a deficient number, since it is larger than the sum of its proper divisors (267752123899).

21112110212101 is an equidigital number, since it uses as much as digits as its factorization.

21112110212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377859.

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

Adding to 21112110212101 its reverse (10121201121112), we get a palindrome (31233311333213).

The spelling of 21112110212101 in words is "twenty-one trillion, one hundred twelve billion, one hundred ten million, two hundred twelve thousand, one hundred one".