20210122200211 has 2 divisors, whose sum is σ = 20210122200212. Its totient is φ = 20210122200210.

The previous prime is 20210122200199. The next prime is 20210122200241. The reversal of 20210122200211 is 11200222101202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20210122200211 - 2²⁵ = 20210088645779 is a prime.

It is not a weakly prime, because it can be changed into another prime (20210122200241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105061100105 + 10105061100106.

It is an arithmetic number, because the mean of its divisors is an integer number (10105061100106).

Almost surely, 2^{20210122200211} is an apocalyptic number.

20210122200211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210122200211 is an equidigital number, since it uses as much as digits as its factorization.

20210122200211 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 16.

Adding to 20210122200211 its reverse (11200222101202), we get a palindrome (31410344301413).

Subtracting from 20210122200211 its reverse (11200222101202), we obtain a palindrome (9009900099009).

The spelling of 20210122200211 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, two hundred eleven".