21344142310133 has 8 divisors (see below), whose sum is σ = 22600078850520. Its totient is φ = 20088250076160.

The previous prime is 21344142310109. The next prime is 21344142310193. The reversal of 21344142310133 is 33101324144312.

It can be written as a sum of positive squares in 4 ways, for example, as 10902926633764 + 10441215676369 = 3301958^2 + 3231287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21344142310133 - 2²⁰ = 21344141261557 is a prime.

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 21344142310133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344142310193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10082228 + ... + 12014141.

It is an arithmetic number, because the mean of its divisors is an integer number (2825009856315).

Almost surely, 2^{21344142310133} is an apocalyptic number.

It is an amenable number.

21344142310133 is a deficient number, since it is larger than the sum of its proper divisors (1255936540387).

21344142310133 is a wasteful number, since it uses less digits than its factorization.

21344142310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22153207.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 21344142310133 its reverse (33101324144312), we get a palindrome (54445466454445).

The spelling of 21344142310133 in words is "twenty-one trillion, three hundred forty-four billion, one hundred forty-two million, three hundred ten thousand, one hundred thirty-three".