121343103 has 20 divisors (see below), whose sum is σ = 207161680. Its totient is φ = 69338592.

The previous prime is 121343099. The next prime is 121343107. The reversal of 121343103 is 301343121.

It is an interprime number because it is at equal distance from previous prime (121343099) and next prime (121343107).

It is not a de Polignac number, because 121343103 - 2² = 121343099 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 (121343107) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 106438 + ... + 107571.

It is an arithmetic number, because the mean of its divisors is an integer number (10358084).

Almost surely, 2^121343103 is an apocalyptic number.

121343103 is a deficient number, since it is larger than the sum of its proper divisors (85818577).

121343103 is an equidigital number, since it uses as much as digits as its factorization.

121343103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214028 (or 214019 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 121343103 is about 11015.5845509896. The cubic root of 121343103 is about 495.0758010639.

Adding to 121343103 its sum of digits (18), we get a palindrome (121343121).

Adding to 121343103 its reverse (301343121), we get a palindrome (422686224).

The spelling of 121343103 in words is "one hundred twenty-one million, three hundred forty-three thousand, one hundred three".