1003002121 has 8 divisors (see below), whose sum is σ = 1096583904. Its totient is φ = 909820320.

The previous prime is 1003002113. The next prime is 1003002151. The reversal of 1003002121 is 1212003001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003002121 - 2³ = 1003002113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003002098 and 1003002107.

It is not an unprimeable number, because it can be changed into a prime (1003002151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94735 + ... + 104788.

It is an arithmetic number, because the mean of its divisors is an integer number (137072988).

Almost surely, 2^1003002121 is an apocalyptic number.

1003002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1003002121 is a deficient number, since it is larger than the sum of its proper divisors (93581783).

1003002121 is a wasteful number, since it uses less digits than its factorization.

1003002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199991.

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

The square root of 1003002121 is about 31670.2087299721. The cubic root of 1003002121 is about 1000.9997072524. Note that the first 3 decimals are identical.

Adding to 1003002121 its reverse (1212003001), we get a palindrome (2215005122).

The spelling of 1003002121 in words is "one billion, three million, two thousand, one hundred twenty-one".