21220002110201 has 8 divisors (see below), whose sum is σ = 21342805292424. Its totient is φ = 21097531278720.

The previous prime is 21220002110159. The next prime is 21220002110207. The reversal of 21220002110201 is 10201120002212.

It can be written as a sum of positive squares in 4 ways, for example, as 421622955625 + 20798379154576 = 649325^2 + 4560524^2 .

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 21220002110201 - 2²⁶ = 21219935001337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220002110207) 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, 82959620 + ... + 83215013.

It is an arithmetic number, because the mean of its divisors is an integer number (2667850661553).

Almost surely, 2^{21220002110201} is an apocalyptic number.

It is an amenable number.

21220002110201 is a deficient number, since it is larger than the sum of its proper divisors (122803182223).

21220002110201 is a wasteful number, since it uses less digits than its factorization.

21220002110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166175371.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21220002110201 its reverse (10201120002212), we get a palindrome (31421122112413).

The spelling of 21220002110201 in words is "twenty-one trillion, two hundred twenty billion, two million, one hundred ten thousand, two hundred one".