21300102023 has 4 divisors (see below), whose sum is σ = 21300545640. Its totient is φ = 21299658408.

The previous prime is 21300102017. The next prime is 21300102037. The reversal of 21300102023 is 32020100312.

It is a happy number.

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 21300102023 - 2¹⁶ = 21300036487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300101989 and 21300102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300902023) 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 3 ways as a sum of consecutive naturals, for example, 139640 + ... + 249197.

It is an arithmetic number, because the mean of its divisors is an integer number (5325136410).

Almost surely, 2^21300102023 is an apocalyptic number.

21300102023 is a deficient number, since it is larger than the sum of its proper divisors (443617).

21300102023 is an equidigital number, since it uses as much as digits as its factorization.

21300102023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443616.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21300102023 its reverse (32020100312), we get a palindrome (53320202335).

The spelling of 21300102023 in words is "twenty-one billion, three hundred million, one hundred two thousand, twenty-three".