121104403 has 16 divisors (see below), whose sum is σ = 142248960. Its totient is φ = 100958976.

The previous prime is 121104359. The next prime is 121104409. The reversal of 121104403 is 304401121.

It is a cyclic number.

It is not a de Polignac number, because 121104403 - 2¹⁷ = 120973331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121104409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38550 + ... + 41572.

It is an arithmetic number, because the mean of its divisors is an integer number (8890560).

Almost surely, 2^121104403 is an apocalyptic number.

121104403 is a deficient number, since it is larger than the sum of its proper divisors (21144557).

121104403 is an equidigital number, since it uses as much as digits as its factorization.

121104403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121104403 is about 11004.7445676853. The cubic root of 121104403 is about 494.7509586278.

Adding to 121104403 its reverse (304401121), we get a palindrome (425505524).

The spelling of 121104403 in words is "one hundred twenty-one million, one hundred four thousand, four hundred three".