21001130013 has 32 divisors (see below), whose sum is σ = 30690316800. Its totient is φ = 12714791936.

The previous prime is 21001130009. The next prime is 21001130077. The reversal of 21001130013 is 31003110012.

It is a cyclic number.

It is not a de Polignac number, because 21001130013 - 2² = 21001130009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3056620 + ... + 3063482.

It is an arithmetic number, because the mean of its divisors is an integer number (959072400).

Almost surely, 2^21001130013 is an apocalyptic number.

It is an amenable number.

21001130013 is a deficient number, since it is larger than the sum of its proper divisors (9689186787).

21001130013 is a wasteful number, since it uses less digits than its factorization.

21001130013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8981.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21001130013 its reverse (31003110012), we get a palindrome (52004240025).

The spelling of 21001130013 in words is "twenty-one billion, one million, one hundred thirty thousand, thirteen".