21010013310006 has 48 divisors (see below), whose sum is σ = 52651599646464. Its totient is φ = 5930537316912.

The previous prime is 21010013310001. The next prime is 21010013310007. The reversal of 21010013310006 is 60001331001012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010013310001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004484346 + ... + 1004505261.

It is an arithmetic number, because the mean of its divisors is an integer number (1096908325968).

Almost surely, 2^{21010013310006} is an apocalyptic number.

21010013310006 is an abundant number, since it is smaller than the sum of its proper divisors (31641586336458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010013310006 is a wasteful number, since it uses less digits than its factorization.

21010013310006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008989705 (or 2008989702 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21010013310006 its reverse (60001331001012), we get a palindrome (81011344311018).

The spelling of 21010013310006 in words is "twenty-one trillion, ten billion, thirteen million, three hundred ten thousand, six".