21233123200013 has 4 divisors (see below), whose sum is σ = 21726916762848. Its totient is φ = 20739329637180.

The previous prime is 21233123200007. The next prime is 21233123200027. The reversal of 21233123200013 is 31000232133212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21233123200013 - 2⁴⁰ = 20133611572237 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 (21233123200613) 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, 246896781353 + ... + 246896781438.

It is an arithmetic number, because the mean of its divisors is an integer number (5431729190712).

Almost surely, 2^{21233123200013} is an apocalyptic number.

It is an amenable number.

21233123200013 is a deficient number, since it is larger than the sum of its proper divisors (493793562835).

21233123200013 is an equidigital number, since it uses as much as digits as its factorization.

21233123200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493793562834.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21233123200013 its reverse (31000232133212), we get a palindrome (52233355333225).

The spelling of 21233123200013 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred twenty-three million, two hundred thousand, thirteen".