21010320130100 has 36 divisors (see below), whose sum is σ = 52105593924384. Its totient is φ = 7203538330080.

The previous prime is 21010320130073. The next prime is 21010320130117. The reversal of 21010320130100 is 103102301012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 15007370822 + ... + 15007372221.

Almost surely, 2^{21010320130100} is an apocalyptic number.

21010320130100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010320130100 is an abundant number, since it is smaller than the sum of its proper divisors (31095273794284).

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

21010320130100 is a wasteful number, since it uses less digits than its factorization.

21010320130100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30014743064 (or 30014743057 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21010320130100 its reverse (103102301012), we get a palindrome (21113422431112).

The spelling of 21010320130100 in words is "twenty-one trillion, ten billion, three hundred twenty million, one hundred thirty thousand, one hundred".