120003121 has 16 divisors (see below), whose sum is σ = 143481600. Its totient is φ = 98317824.

The previous prime is 120003113. The next prime is 120003127. The reversal of 120003121 is 121300021.

It is not a de Polignac number, because 120003121 - 2³ = 120003113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120003098 and 120003107.

It is not an unprimeable number, because it can be changed into a prime (120003127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84465 + ... + 85873.

It is an arithmetic number, because the mean of its divisors is an integer number (8967600).

Almost surely, 2^120003121 is an apocalyptic number.

It is an amenable number.

120003121 is a deficient number, since it is larger than the sum of its proper divisors (23478479).

120003121 is an frugal number, since it uses more digits than its factorization.

120003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1439 counting only the distinct ones).

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

The square root of 120003121 is about 10954.5936026856. The cubic root of 120003121 is about 493.2466909667.

Adding to 120003121 its reverse (121300021), we get a palindrome (241303142).

The spelling of 120003121 in words is "one hundred twenty million, three thousand, one hundred twenty-one".