21003044030013 has 8 divisors (see below), whose sum is σ = 28760925158368. Its totient is φ = 13623596127504.

The previous prime is 21003044030009. The next prime is 21003044030047. The reversal of 21003044030013 is 31003044030012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21003044030013 - 2² = 21003044030009 is a prime.

It is a super-2 number, since 2×21003044030013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003044030083) 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 7 ways as a sum of consecutive naturals, for example, 94608306331 + ... + 94608306552.

It is an arithmetic number, because the mean of its divisors is an integer number (3595115644796).

Almost surely, 2^{21003044030013} is an apocalyptic number.

It is an amenable number.

21003044030013 is a deficient number, since it is larger than the sum of its proper divisors (7757881128355).

21003044030013 is a wasteful number, since it uses less digits than its factorization.

21003044030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189216612923.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21003044030013 its reverse (31003044030012), we get a palindrome (52006088060025).

Subtracting 21003044030013 from its reverse (31003044030012), we obtain a palindrome (9999999999999).

The spelling of 21003044030013 in words is "twenty-one trillion, three billion, forty-four million, thirty thousand, thirteen".