21300102133 has 12 divisors (see below), whose sum is σ = 22788138828. Its totient is φ = 19902594240.

The previous prime is 21300102121. The next prime is 21300102137. The reversal of 21300102133 is 33120100312.

It can be written as a sum of positive squares in 2 ways, for example, as 17023203729 + 4276898404 = 130473^2 + 65398^2 .

It is not a de Polignac number, because 21300102133 - 2⁹ = 21300101621 is a prime.

It is a super-2 number, since 2×21300102133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300102137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377778 + ... + 430483.

It is an arithmetic number, because the mean of its divisors is an integer number (1899011569).

Almost surely, 2^21300102133 is an apocalyptic number.

It is an amenable number.

21300102133 is a deficient number, since it is larger than the sum of its proper divisors (1488036695).

21300102133 is an equidigital number, since it uses as much as digits as its factorization.

21300102133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808372 (or 808353 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21300102133 its reverse (33120100312), we get a palindrome (54420202445).

The spelling of 21300102133 in words is "twenty-one billion, three hundred million, one hundred two thousand, one hundred thirty-three".