21444313021342 has 16 divisors (see below), whose sum is σ = 34139514143952. Its totient is φ = 10067471245440.

The previous prime is 21444313021303. The next prime is 21444313021363. The reversal of 21444313021342 is 24312031344412.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 21444313021298 and 21444313021307.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 749053488 + ... + 749082115.

It is an arithmetic number, because the mean of its divisors is an integer number (2133719633997).

Almost surely, 2^{21444313021342} is an apocalyptic number.

21444313021342 is a deficient number, since it is larger than the sum of its proper divisors (12695201122610).

21444313021342 is a wasteful number, since it uses less digits than its factorization.

21444313021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498136043.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 21444313021342 its reverse (24312031344412), we get a palindrome (45756344365754).

The spelling of 21444313021342 in words is "twenty-one trillion, four hundred forty-four billion, three hundred thirteen million, twenty-one thousand, three hundred forty-two".