121111212120133 has 2 divisors, whose sum is σ = 121111212120134. Its totient is φ = 121111212120132.

The previous prime is 121111212120077. The next prime is 121111212120191. The reversal of 121111212120133 is 331021212111121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66576428475844 + 54534783644289 = 8159438^2 + 7384767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121111212120133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121111212123133) 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, 60555606060066 + 60555606060067.

It is an arithmetic number, because the mean of its divisors is an integer number (60555606060067).

Almost surely, 2^{121111212120133} is an apocalyptic number.

It is an amenable number.

121111212120133 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111212120133 is an equidigital number, since it uses as much as digits as its factorization.

121111212120133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 121111212120133 its reverse (331021212111121), we get a palindrome (452132424231254).

The spelling of 121111212120133 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, one hundred thirty-three".