121303103 has 4 divisors (see below), whose sum is σ = 121334808. Its totient is φ = 121271400.

The previous prime is 121303033. The next prime is 121303141. The reversal of 121303103 is 301303121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121303103 - 2²⁴ = 104525887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9176 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (30333702).

Almost surely, 2^121303103 is an apocalyptic number.

121303103 is a deficient number, since it is larger than the sum of its proper divisors (31705).

121303103 is an equidigital number, since it uses as much as digits as its factorization.

121303103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31704.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 121303103 is about 11013.7687918351. The cubic root of 121303103 is about 495.0213955313.

Adding to 121303103 its reverse (301303121), we get a palindrome (422606224).

The spelling of 121303103 in words is "one hundred twenty-one million, three hundred three thousand, one hundred three".