21321112301303 has 4 divisors (see below), whose sum is σ = 21325030908528. Its totient is φ = 21317193694080.

The previous prime is 21321112301147. The next prime is 21321112301351. The reversal of 21321112301303 is 30310321112312.

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 21321112301303 - 2²² = 21321108106999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321112301353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959295451 + ... + 1959306332.

It is an arithmetic number, because the mean of its divisors is an integer number (5331257727132).

Almost surely, 2^{21321112301303} is an apocalyptic number.

21321112301303 is a deficient number, since it is larger than the sum of its proper divisors (3918607225).

21321112301303 is an equidigital number, since it uses as much as digits as its factorization.

21321112301303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918607224.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21321112301303 its reverse (30310321112312), we get a palindrome (51631433413615).

The spelling of 21321112301303 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred twelve million, three hundred one thousand, three hundred three".