121801103 has 2 divisors, whose sum is σ = 121801104. Its totient is φ = 121801102.

The previous prime is 121801091. The next prime is 121801117. The reversal of 121801103 is 301108121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121801103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121801403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60900551 + 60900552.

It is an arithmetic number, because the mean of its divisors is an integer number (60900552).

Almost surely, 2^121801103 is an apocalyptic number.

121801103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121801103 is an equidigital number, since it uses as much as digits as its factorization.

121801103 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 17.

The square root of 121801103 is about 11036.3537003849. The cubic root of 121801103 is about 495.6978939319.

Adding to 121801103 its reverse (301108121), we get a palindrome (422909224).

The spelling of 121801103 in words is "one hundred twenty-one million, eight hundred one thousand, one hundred three".