120121003 has 4 divisors (see below), whose sum is σ = 121568328. Its totient is φ = 118673680.

The previous prime is 120120967. The next prime is 120121009. The reversal of 120121003 is 300121021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300121021 = 967 ⋅310363.

It is a cyclic number.

It is not a de Polignac number, because 120121003 - 2⁹ = 120120491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121009) 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, 723538 + ... + 723703.

It is an arithmetic number, because the mean of its divisors is an integer number (30392082).

Almost surely, 2^120121003 is an apocalyptic number.

120121003 is a deficient number, since it is larger than the sum of its proper divisors (1447325).

120121003 is an equidigital number, since it uses as much as digits as its factorization.

120121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447324.

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

The square root of 120121003 is about 10959.9727645647. The cubic root of 120121003 is about 493.4081475391.

Adding to 120121003 its reverse (300121021), we get a palindrome (420242024).

The spelling of 120121003 in words is "one hundred twenty million, one hundred twenty-one thousand, three".