21232313323201 has 4 divisors (see below), whose sum is σ = 21233440382400. Its totient is φ = 21231186264004.

The previous prime is 21232313323183. The next prime is 21232313323231. The reversal of 21232313323201 is 10232331323212.

It is a happy number.

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 21232313323201 - 2¹³ = 21232313315009 is a prime.

It is a super-2 number, since 2×21232313323201² (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 21232313323201.

It is not an unprimeable number, because it can be changed into a prime (21232313323231) 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 3 ways as a sum of consecutive naturals, for example, 563501341 + ... + 563539018.

It is an arithmetic number, because the mean of its divisors is an integer number (5308360095600).

Almost surely, 2^{21232313323201} is an apocalyptic number.

It is an amenable number.

21232313323201 is a deficient number, since it is larger than the sum of its proper divisors (1127059199).

21232313323201 is a wasteful number, since it uses less digits than its factorization.

21232313323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127059198.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21232313323201 its reverse (10232331323212), we get a palindrome (31464644646413).

The spelling of 21232313323201 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred thirteen million, three hundred twenty-three thousand, two hundred one".