1003421025021 has 4 divisors (see below), whose sum is σ = 1337894700032. Its totient is φ = 668947350012.

The previous prime is 1003421024999. The next prime is 1003421025041. The reversal of 1003421025021 is 1205201243001.

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 1003421025021 - 2²⁹ = 1002884154109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003421025041) 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, 167236837501 + ... + 167236837506.

It is an arithmetic number, because the mean of its divisors is an integer number (334473675008).

Almost surely, 2^{1003421025021} is an apocalyptic number.

It is an amenable number.

1003421025021 is a deficient number, since it is larger than the sum of its proper divisors (334473675011).

1003421025021 is an equidigital number, since it uses as much as digits as its factorization.

1003421025021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334473675010.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1003421025021 its reverse (1205201243001), we get a palindrome (2208622268022).

The spelling of 1003421025021 in words is "one trillion, three billion, four hundred twenty-one million, twenty-five thousand, twenty-one".