21300100100311 has 4 divisors (see below), whose sum is σ = 21301982244712. Its totient is φ = 21298217955912.

The previous prime is 21300100100269. The next prime is 21300100100317. The reversal of 21300100100311 is 11300100100312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21300100100311 - 2³³ = 21291510165719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300100100291 and 21300100100300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300100100317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941055225 + ... + 941077858.

It is an arithmetic number, because the mean of its divisors is an integer number (5325495561178).

Almost surely, 2^{21300100100311} is an apocalyptic number.

21300100100311 is a deficient number, since it is larger than the sum of its proper divisors (1882144401).

21300100100311 is a wasteful number, since it uses less digits than its factorization.

21300100100311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882144400.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21300100100311 its reverse (11300100100312), we get a palindrome (32600200200623).

Subtracting from 21300100100311 its reverse (11300100100312), we obtain a palindrome (9999999999999).

The spelling of 21300100100311 in words is "twenty-one trillion, three hundred billion, one hundred million, one hundred thousand, three hundred eleven".