122001020111 has 2 divisors, whose sum is σ = 122001020112. Its totient is φ = 122001020110.

The previous prime is 122001020101. The next prime is 122001020129. The reversal of 122001020111 is 111020100221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122001020111 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 122001020092 and 122001020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122001020101) 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, 61000510055 + 61000510056.

It is an arithmetic number, because the mean of its divisors is an integer number (61000510056).

Almost surely, 2^122001020111 is an apocalyptic number.

122001020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122001020111 is an equidigital number, since it uses as much as digits as its factorization.

122001020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122001020111 its reverse (111020100221), we get a palindrome (233021120332).

The spelling of 122001020111 in words is "one hundred twenty-two billion, one million, twenty thousand, one hundred eleven".