21122201020211 has 2 divisors, whose sum is σ = 21122201020212. Its totient is φ = 21122201020210.

The previous prime is 21122201020189. The next prime is 21122201020307. The reversal of 21122201020211 is 11202010222112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21122201020211 - 2⁶ = 21122201020147 is a prime.

It is a super-2 number, since 2×21122201020211² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122201020211.

It is not a weakly prime, because it can be changed into another prime (21122201820211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561100510105 + 10561100510106.

It is an arithmetic number, because the mean of its divisors is an integer number (10561100510106).

Almost surely, 2^{21122201020211} is an apocalyptic number.

21122201020211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122201020211 is an equidigital number, since it uses as much as digits as its factorization.

21122201020211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21122201020211 its reverse (11202010222112), we get a palindrome (32324211242323).

The spelling of 21122201020211 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred one million, twenty thousand, two hundred eleven".