1003030201021 has 4 divisors (see below), whose sum is σ = 1003032327772. Its totient is φ = 1003028074272.

The previous prime is 1003030200883. The next prime is 1003030201037. The reversal of 1003030201021 is 1201020303001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 858828492900 + 144201708121 = 926730^2 + 379739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003030201021 - 2¹⁷ = 1003030069949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003030200992 and 1003030201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003030201081) 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, 4416 + ... + 1416361.

It is an arithmetic number, because the mean of its divisors is an integer number (250758081943).

Almost surely, 2^{1003030201021} is an apocalyptic number.

It is an amenable number.

1003030201021 is a deficient number, since it is larger than the sum of its proper divisors (2126751).

1003030201021 is an equidigital number, since it uses as much as digits as its factorization.

1003030201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126750.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1003030201021 its reverse (1201020303001), we get a palindrome (2204050504022).

The spelling of 1003030201021 in words is "one trillion, three billion, thirty million, two hundred one thousand, twenty-one".