21300605041236 has 24 divisors (see below), whose sum is σ = 49768304666304. Its totient is φ = 7090645551360.

The previous prime is 21300605041231. The next prime is 21300605041237. The reversal of 21300605041236 is 63214050600312.

It is a junction number, because it is equal to n+sod(n) for n = 21300605041197 and 21300605041206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300605041231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194506845 + ... + 1194524676.

It is an arithmetic number, because the mean of its divisors is an integer number (2073679361096).

Almost surely, 2^{21300605041236} is an apocalyptic number.

It is an amenable number.

21300605041236 is an abundant number, since it is smaller than the sum of its proper divisors (28467699625068).

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

21300605041236 is a wasteful number, since it uses less digits than its factorization.

21300605041236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389032271 (or 2389032269 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 21300605041236 its reverse (63214050600312), we get a palindrome (84514655641548).

The spelling of 21300605041236 in words is "twenty-one trillion, three hundred billion, six hundred five million, forty-one thousand, two hundred thirty-six".