21300102423 has 12 divisors (see below), whose sum is σ = 30799522728. Its totient is φ = 14184972240.

The previous prime is 21300102419. The next prime is 21300102457. The reversal of 21300102423 is 32420100312.

It is not a de Polignac number, because 21300102423 - 2² = 21300102419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21300102396 and 21300102405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300102493) by changing a digit.

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, 1249065 + ... + 1266002.

It is an arithmetic number, because the mean of its divisors is an integer number (2566626894).

Almost surely, 2^21300102423 is an apocalyptic number.

21300102423 is a deficient number, since it is larger than the sum of its proper divisors (9499420305).

21300102423 is a wasteful number, since it uses less digits than its factorization.

21300102423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516014 (or 2516011 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21300102423 its reverse (32420100312), we get a palindrome (53720202735).

The spelling of 21300102423 in words is "twenty-one billion, three hundred million, one hundred two thousand, four hundred twenty-three".