21220001120211 has 16 divisors (see below), whose sum is σ = 30541530850560. Its totient is φ = 13064988194720.

The previous prime is 21220001120167. The next prime is 21220001120281. The reversal of 21220001120211 is 11202110002212.

It is a cyclic number.

It is not a de Polignac number, because 21220001120211 - 2⁶ = 21220001120147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220001120281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5302347105 + ... + 5302351106.

It is an arithmetic number, because the mean of its divisors is an integer number (1908845678160).

Almost surely, 2^{21220001120211} is an apocalyptic number.

21220001120211 is a deficient number, since it is larger than the sum of its proper divisors (9321529730349).

21220001120211 is a wasteful number, since it uses less digits than its factorization.

21220001120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604698266.

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

Adding to 21220001120211 its reverse (11202110002212), we get a palindrome (32422111122423).

The spelling of 21220001120211 in words is "twenty-one trillion, two hundred twenty billion, one million, one hundred twenty thousand, two hundred eleven".