201220122211 has 2 divisors, whose sum is σ = 201220122212. Its totient is φ = 201220122210.

The previous prime is 201220122179. The next prime is 201220122227. The reversal of 201220122211 is 112221022102.

It is a happy number.

It is an a-pointer prime, because the next prime (201220122227) can be obtained adding 201220122211 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201220122211 - 2⁵ = 201220122179 is a prime.

It is not a weakly prime, because it can be changed into another prime (201220122511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610061105 + 100610061106.

It is an arithmetic number, because the mean of its divisors is an integer number (100610061106).

Almost surely, 2^201220122211 is an apocalyptic number.

201220122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220122211 is an equidigital number, since it uses as much as digits as its factorization.

201220122211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201220122211 its reverse (112221022102), we get a palindrome (313441144313).

The spelling of 201220122211 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-two thousand, two hundred eleven".