21034211013 has 12 divisors (see below), whose sum is σ = 30462082560. Its totient is φ = 13986191976.

The previous prime is 21034210987. The next prime is 21034211063. The reversal of 21034211013 is 31011243012.

21034211013 is a `hidden beast` number, since 210 + 342 + 110 + 1 + 3 = 666.

It is not a de Polignac number, because 21034211013 - 2⁹ = 21034210501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034211063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3047643 + ... + 3054536.

It is an arithmetic number, because the mean of its divisors is an integer number (2538506880).

Almost surely, 2^21034211013 is an apocalyptic number.

It is an amenable number.

21034211013 is a deficient number, since it is larger than the sum of its proper divisors (9427871547).

21034211013 is a wasteful number, since it uses less digits than its factorization.

21034211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102568 (or 6102565 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21034211013 its reverse (31011243012), we get a palindrome (52045454025).

The spelling of 21034211013 in words is "twenty-one billion, thirty-four million, two hundred eleven thousand, thirteen".