1201003121 has 8 divisors (see below), whose sum is σ = 1253634624. Its totient is φ = 1148406160.

The previous prime is 1201003087. The next prime is 1201003151. The reversal of 1201003121 is 1213001021.

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 1201003121 - 2¹⁰ = 1201002097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201003151) 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 7 ways as a sum of consecutive naturals, for example, 83426 + ... + 96756.

It is an arithmetic number, because the mean of its divisors is an integer number (156704328).

Almost surely, 2^1201003121 is an apocalyptic number.

It is an amenable number.

1201003121 is a deficient number, since it is larger than the sum of its proper divisors (52631503).

1201003121 is a wasteful number, since it uses less digits than its factorization.

1201003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17271.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1201003121 is about 34655.4919312942. The cubic root of 1201003121 is about 1062.9545909149.

Adding to 1201003121 its reverse (1213001021), we get a palindrome (2414004142).

The spelling of 1201003121 in words is "one billion, two hundred one million, three thousand, one hundred twenty-one".