121233200111 has 2 divisors, whose sum is σ = 121233200112. Its totient is φ = 121233200110.

The previous prime is 121233200093. The next prime is 121233200113. The reversal of 121233200111 is 111002332121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121233200111 is a prime.

Together with 121233200113, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121233200111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121233200113) 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, 60616600055 + 60616600056.

It is an arithmetic number, because the mean of its divisors is an integer number (60616600056).

Almost surely, 2^121233200111 is an apocalyptic number.

121233200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121233200111 is an equidigital number, since it uses as much as digits as its factorization.

121233200111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121233200111 its reverse (111002332121), we get a palindrome (232235532232).

The spelling of 121233200111 in words is "one hundred twenty-one billion, two hundred thirty-three million, two hundred thousand, one hundred eleven".