21003242143334 has 16 divisors (see below), whose sum is σ = 34369920483840. Its totient is φ = 9546656359560.

The previous prime is 21003242143313. The next prime is 21003242143339. The reversal of 21003242143334 is 43334124230012.

It is a super-2 number, since 2×21003242143334² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21003242143334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003242143339) 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 7 ways as a sum of consecutive naturals, for example, 12803294 + ... + 14350289.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120030240).

Almost surely, 2^{21003242143334} is an apocalyptic number.

21003242143334 is a deficient number, since it is larger than the sum of its proper divisors (13366678340506).

21003242143334 is a wasteful number, since it uses less digits than its factorization.

21003242143334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27188755.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 21003242143334 its reverse (43334124230012), we get a palindrome (64337366373346).

The spelling of 21003242143334 in words is "twenty-one trillion, three billion, two hundred forty-two million, one hundred forty-three thousand, three hundred thirty-four".