21321323302303 has 8 divisors (see below), whose sum is σ = 22085678148480. Its totient is φ = 20558910909600.

The previous prime is 21321323302249. The next prime is 21321323302319. The reversal of 21321323302303 is 30320332312312.

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

It is not a de Polignac number, because 21321323302303 - 2¹³ = 21321323294111 is a prime.

It is a super-2 number, since 2×21321323302303² (a number of 27 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 (21321323302343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485591023 + ... + 485634928.

It is an arithmetic number, because the mean of its divisors is an integer number (2760709768560).

Almost surely, 2^{21321323302303} is an apocalyptic number.

21321323302303 is a deficient number, since it is larger than the sum of its proper divisors (764354846177).

21321323302303 is an equidigital number, since it uses as much as digits as its factorization.

21321323302303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971226737.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21321323302303 its reverse (30320332312312), we get a palindrome (51641655614615).

The spelling of 21321323302303 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twenty-three million, three hundred two thousand, three hundred three".