21010221322201 has 32 divisors (see below), whose sum is σ = 21759064473600. Its totient is φ = 20275839343680.

The previous prime is 21010221322171. The next prime is 21010221322253. The reversal of 21010221322201 is 10222312201012.

It is a cyclic number.

It is not a de Polignac number, because 21010221322201 - 2⁵ = 21010221322169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010221322261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5090916600 + ... + 5090920726.

It is an arithmetic number, because the mean of its divisors is an integer number (679970764800).

Almost surely, 2^{21010221322201} is an apocalyptic number.

It is an amenable number.

21010221322201 is a deficient number, since it is larger than the sum of its proper divisors (748843151399).

21010221322201 is a wasteful number, since it uses less digits than its factorization.

21010221322201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21010221322201 its reverse (10222312201012), we get a palindrome (31232533523213).

The spelling of 21010221322201 in words is "twenty-one trillion, ten billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred one".