21210110022201 has 8 divisors (see below), whose sum is σ = 28281064916640. Its totient is φ = 14139614237952.

The previous prime is 21210110022151. The next prime is 21210110022209. The reversal of 21210110022201 is 10222001101212.

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

It is not a de Polignac number, because 21210110022201 - 2¹⁵ = 21210109989433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210110022209) 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, 114669736 + ... + 114854553.

It is an arithmetic number, because the mean of its divisors is an integer number (3535133114580).

Almost surely, 2^{21210110022201} is an apocalyptic number.

It is an amenable number.

21210110022201 is a deficient number, since it is larger than the sum of its proper divisors (7070954894439).

21210110022201 is a wasteful number, since it uses less digits than its factorization.

21210110022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229555095.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210110022201 its reverse (10222001101212), we get a palindrome (31432111123413).

The spelling of 21210110022201 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, twenty-two thousand, two hundred one".