21201110110101 has 8 divisors (see below), whose sum is σ = 28310150006080. Its totient is φ = 14113071810432.

The previous prime is 21201110110073. The next prime is 21201110110121. The reversal of 21201110110101 is 10101101110212.

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

It is not a de Polignac number, because 21201110110101 - 2⁹ = 21201110109589 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 (21201110110121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5250396721 + ... + 5250400758.

It is an arithmetic number, because the mean of its divisors is an integer number (3538768750760).

Almost surely, 2^{21201110110101} is an apocalyptic number.

It is an amenable number.

21201110110101 is a deficient number, since it is larger than the sum of its proper divisors (7109039895979).

21201110110101 is a wasteful number, since it uses less digits than its factorization.

21201110110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500798155.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21201110110101 its reverse (10101101110212), we get a palindrome (31302211220313).

The spelling of 21201110110101 in words is "twenty-one trillion, two hundred one billion, one hundred ten million, one hundred ten thousand, one hundred one".