21011300130210 has 128 divisors (see below), whose sum is σ = 59649753784320. Its totient is φ = 4686766292736.

The previous prime is 21011300130209. The next prime is 21011300130263. The reversal of 21011300130210 is 1203100311012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21011300130210.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 61471594 + ... + 61812453.

It is an arithmetic number, because the mean of its divisors is an integer number (466013701440).

Almost surely, 2^{21011300130210} is an apocalyptic number.

21011300130210 is an abundant number, since it is smaller than the sum of its proper divisors (38638453654110).

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

21011300130210 is a wasteful number, since it uses less digits than its factorization.

21011300130210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123284112.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21011300130210 its reverse (1203100311012), we get a palindrome (22214400441222).

The spelling of 21011300130210 in words is "twenty-one trillion, eleven billion, three hundred million, one hundred thirty thousand, two hundred ten".