21310144312333 has 4 divisors (see below), whose sum is σ = 21311018742528. Its totient is φ = 21309269882140.

The previous prime is 21310144312309. The next prime is 21310144312349. The reversal of 21310144312333 is 33321344101312.

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 a de Polignac number, because none of the positive numbers 2^k-21310144312333 is a prime.

It is a super-2 number, since 2×21310144312333² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21310144312295 and 21310144312304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310144310333) 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, 437178541 + ... + 437227282.

It is an arithmetic number, because the mean of its divisors is an integer number (5327754685632).

Almost surely, 2^{21310144312333} is an apocalyptic number.

It is an amenable number.

21310144312333 is a deficient number, since it is larger than the sum of its proper divisors (874430195).

21310144312333 is an equidigital number, since it uses as much as digits as its factorization.

21310144312333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874430194.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 21310144312333 its reverse (33321344101312), we get a palindrome (54631488413645).

The spelling of 21310144312333 in words is "twenty-one trillion, three hundred ten billion, one hundred forty-four million, three hundred twelve thousand, three hundred thirty-three".