121012003 has 12 divisors (see below), whose sum is σ = 142912560. Its totient is φ = 100373040.

The previous prime is 121011997. The next prime is 121012013. The reversal of 121012003 is 300210121.

It is a de Polignac number, because none of the positive numbers 2^k-121012003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012013) 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 11 ways as a sum of consecutive naturals, for example, 2268 + ... + 15721.

It is an arithmetic number, because the mean of its divisors is an integer number (11909380).

Almost surely, 2^121012003 is an apocalyptic number.

121012003 is a deficient number, since it is larger than the sum of its proper divisors (21900557).

121012003 is an equidigital number, since it uses as much as digits as its factorization.

121012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18058 (or 18027 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121012003 is about 11000.5455773793. The cubic root of 121012003 is about 494.6250985741.

Adding to 121012003 its reverse (300210121), we get a palindrome (421222124).

The spelling of 121012003 in words is "one hundred twenty-one million, twelve thousand, three".