21323311231301 has 4 divisors (see below), whose sum is σ = 21324387153600. Its totient is φ = 21322235309004.

The previous prime is 21323311231289. The next prime is 21323311231319. The reversal of 21323311231301 is 10313211332312.

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 21323311231301 - 2¹⁸ = 21323310969157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323311230301) 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, 537931421 + ... + 537971058.

It is an arithmetic number, because the mean of its divisors is an integer number (5331096788400).

Almost surely, 2^{21323311231301} is an apocalyptic number.

It is an amenable number.

21323311231301 is a deficient number, since it is larger than the sum of its proper divisors (1075922299).

21323311231301 is a wasteful number, since it uses less digits than its factorization.

21323311231301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075922298.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21323311231301 its reverse (10313211332312), we get a palindrome (31636522563613).

The spelling of 21323311231301 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred eleven million, two hundred thirty-one thousand, three hundred one".