1003000221021 has 4 divisors (see below), whose sum is σ = 1337333628032. Its totient is φ = 668666814012.

The previous prime is 1003000220941. The next prime is 1003000221029. The reversal of 1003000221021 is 1201220003001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1003000221021 - 2¹¹ = 1003000218973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003000220988 and 1003000221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003000221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167166703501 + ... + 167166703506.

It is an arithmetic number, because the mean of its divisors is an integer number (334333407008).

Almost surely, 2^{1003000221021} is an apocalyptic number.

It is an amenable number.

1003000221021 is a deficient number, since it is larger than the sum of its proper divisors (334333407011).

1003000221021 is an equidigital number, since it uses as much as digits as its factorization.

1003000221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334333407010.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1003000221021 its reverse (1201220003001), we get a palindrome (2204220224022).

The spelling of 1003000221021 in words is "one trillion, three billion, two hundred twenty-one thousand, twenty-one".