1003310221021 has 4 divisors (see below), whose sum is σ = 1004233230592. Its totient is φ = 1002387211452.

The previous prime is 1003310221007. The next prime is 1003310221091. The reversal of 1003310221021 is 1201220133001.

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 a cyclic number.

It is not a de Polignac number, because 1003310221021 - 2⁵ = 1003310220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003310220986 and 1003310221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003310221091) 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, 461503155 + ... + 461505328.

It is an arithmetic number, because the mean of its divisors is an integer number (251058307648).

Almost surely, 2^{1003310221021} is an apocalyptic number.

It is an amenable number.

1003310221021 is a deficient number, since it is larger than the sum of its proper divisors (923009571).

1003310221021 is an equidigital number, since it uses as much as digits as its factorization.

1003310221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923009570.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1003310221021 its reverse (1201220133001), we get a palindrome (2204530354022).

The spelling of 1003310221021 in words is "one trillion, three billion, three hundred ten million, two hundred twenty-one thousand, twenty-one".