23213001343321 has 4 divisors (see below), whose sum is σ = 23236284194212. Its totient is φ = 23189718492432.

The previous prime is 23213001343291. The next prime is 23213001343373. The reversal of 23213001343321 is 12334310031232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16248469221721 + 6964532121600 = 4030939^2 + 2639040^2 .

It is a cyclic number.

It is not a de Polignac number, because 23213001343321 - 2²⁵ = 23212967788889 is a prime.

It is a super-2 number, since 2×23213001343321² (a number of 28 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 23213001343321.

It is not an unprimeable number, because it can be changed into a prime (23213001343381) 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, 11641423950 + ... + 11641425943.

It is an arithmetic number, because the mean of its divisors is an integer number (5809071048553).

Almost surely, 2^{23213001343321} is an apocalyptic number.

It is an amenable number.

23213001343321 is a deficient number, since it is larger than the sum of its proper divisors (23282850891).

23213001343321 is an equidigital number, since it uses as much as digits as its factorization.

23213001343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23282850890.

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

Adding to 23213001343321 its reverse (12334310031232), we get a palindrome (35547311374553).

The spelling of 23213001343321 in words is "twenty-three trillion, two hundred thirteen billion, one million, three hundred forty-three thousand, three hundred twenty-one".