203122120111 has 2 divisors, whose sum is σ = 203122120112. Its totient is φ = 203122120110.

The previous prime is 203122120109. The next prime is 203122120177. The reversal of 203122120111 is 111021221302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203122120111 - 2¹ = 203122120109 is a prime.

Together with 203122120109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203122120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561060055 + 101561060056.

It is an arithmetic number, because the mean of its divisors is an integer number (101561060056).

Almost surely, 2^203122120111 is an apocalyptic number.

203122120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

203122120111 is an equidigital number, since it uses as much as digits as its factorization.

203122120111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 203122120111 its reverse (111021221302), we get a palindrome (314143341413).

The spelling of 203122120111 in words is "two hundred three billion, one hundred twenty-two million, one hundred twenty thousand, one hundred eleven".