21102220020201 has 8 divisors (see below), whose sum is σ = 28136357523744. Its totient is φ = 14068114598400.

The previous prime is 21102220020199. The next prime is 21102220020209. The reversal of 21102220020201 is 10202002220112.

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

It is not a de Polignac number, because 21102220020201 - 2¹ = 21102220020199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21102220020209) 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, 6441231 + ... + 9148436.

It is an arithmetic number, because the mean of its divisors is an integer number (3517044690468).

Almost surely, 2^{21102220020201} is an apocalyptic number.

It is an amenable number.

21102220020201 is a deficient number, since it is larger than the sum of its proper divisors (7034137503543).

21102220020201 is a wasteful number, since it uses less digits than its factorization.

21102220020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16040871.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21102220020201 its reverse (10202002220112), we get a palindrome (31304222240313).

The spelling of 21102220020201 in words is "twenty-one trillion, one hundred two billion, two hundred twenty million, twenty thousand, two hundred one".