121230103 has 4 divisors (see below), whose sum is σ = 121416408. Its totient is φ = 121043800.

The previous prime is 121230097. The next prime is 121230139. The reversal of 121230103 is 301032121.

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 121230103 - 2¹³ = 121221911 is a prime.

It is a super-5 number, since 5×121230103⁵ (a number of 42 digits) contains 55555 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92173 + ... + 93478.

It is an arithmetic number, because the mean of its divisors is an integer number (30354102).

Almost surely, 2^121230103 is an apocalyptic number.

121230103 is a deficient number, since it is larger than the sum of its proper divisors (186305).

121230103 is an equidigital number, since it uses as much as digits as its factorization.

121230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186304.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121230103 is about 11010.4542594754. The cubic root of 121230103 is about 494.9220745951.

Adding to 121230103 its reverse (301032121), we get a palindrome (422262224).

The spelling of 121230103 in words is "one hundred twenty-one million, two hundred thirty thousand, one hundred three".