21210111030300 has 36 divisors (see below), whose sum is σ = 61367921248536. Its totient is φ = 5656029608000.

The previous prime is 21210111030259. The next prime is 21210111030359. The reversal of 21210111030300 is 303011101212.

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 21210111030300.

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, 35350184751 + ... + 35350185350.

It is an arithmetic number, because the mean of its divisors is an integer number (1704664479126).

Almost surely, 2^{21210111030300} is an apocalyptic number.

21210111030300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210111030300 is an abundant number, since it is smaller than the sum of its proper divisors (40157810218236).

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

21210111030300 is a wasteful number, since it uses less digits than its factorization.

21210111030300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70700370118 (or 70700370111 counting only the distinct ones).

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

Adding to 21210111030300 its reverse (303011101212), we get a palindrome (21513122131512).

The spelling of 21210111030300 in words is "twenty-one trillion, two hundred ten billion, one hundred eleven million, thirty thousand, three hundred".