1001021200003 has 16 divisors (see below), whose sum is σ = 1116951379200. Its totient is φ = 889424046880.

The previous prime is 1001021200001. The next prime is 1001021200097. The reversal of 1001021200003 is 3000021201001.

It is a cyclic number.

It is not a de Polignac number, because 1001021200003 - 2¹ = 1001021200001 is a prime.

It is a super-2 number, since 2×1001021200003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001021200001) 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 15 ways as a sum of consecutive naturals, for example, 4345543 + ... + 4570096.

It is an arithmetic number, because the mean of its divisors is an integer number (69809461200).

Almost surely, 2^{1001021200003} is an apocalyptic number.

1001021200003 is a deficient number, since it is larger than the sum of its proper divisors (115930179197).

1001021200003 is a wasteful number, since it uses less digits than its factorization.

1001021200003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915882.

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

Adding to 1001021200003 its reverse (3000021201001), we get a palindrome (4001042401004).

The spelling of 1001021200003 in words is "one trillion, one billion, twenty-one million, two hundred thousand, three".