201220142111 has 2 divisors, whose sum is σ = 201220142112. Its totient is φ = 201220142110.

The previous prime is 201220142087. The next prime is 201220142117. The reversal of 201220142111 is 111241022102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201220142111 - 2¹⁸ = 201219879967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201220142111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220142117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610071055 + 100610071056.

It is an arithmetic number, because the mean of its divisors is an integer number (100610071056).

Almost surely, 2^201220142111 is an apocalyptic number.

201220142111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220142111 is an equidigital number, since it uses as much as digits as its factorization.

201220142111 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 201220142111 its reverse (111241022102), we get a palindrome (312461164213).

The spelling of 201220142111 in words is "two hundred one billion, two hundred twenty million, one hundred forty-two thousand, one hundred eleven".