21003020302323 has 8 divisors (see below), whose sum is σ = 28004343208336. Its totient is φ = 14001855465600.

The previous prime is 21003020302321. The next prime is 21003020302333. The reversal of 21003020302323 is 32320302030012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21003020302323 - 2¹ = 21003020302321 is a prime.

It is a super-2 number, since 2×21003020302323² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21003020302323.

It is not an unprimeable number, because it can be changed into a prime (21003020302321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39206938 + ... + 39739023.

It is an arithmetic number, because the mean of its divisors is an integer number (3500542901042).

Almost surely, 2^{21003020302323} is an apocalyptic number.

21003020302323 is a deficient number, since it is larger than the sum of its proper divisors (7001322906013).

21003020302323 is an equidigital number, since it uses as much as digits as its factorization.

21003020302323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79034645.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21003020302323 its reverse (32320302030012), we get a palindrome (53323322332335).

The spelling of 21003020302323 in words is "twenty-one trillion, three billion, twenty million, three hundred two thousand, three hundred twenty-three".