21342422003 has 16 divisors (see below), whose sum is σ = 24747803136. Its totient is φ = 18026426880.

The previous prime is 21342421963. The next prime is 21342422119. The reversal of 21342422003 is 30022424312.

It is a de Polignac number, because none of the positive numbers 2^k-21342422003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21342422003.

It is not an unprimeable number, because it can be changed into a prime (21342422303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040000 + ... + 1060322.

It is an arithmetic number, because the mean of its divisors is an integer number (1546737696).

Almost surely, 2^21342422003 is an apocalyptic number.

21342422003 is a deficient number, since it is larger than the sum of its proper divisors (3405381133).

21342422003 is a wasteful number, since it uses less digits than its factorization.

21342422003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22514.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21342422003 its reverse (30022424312), we get a palindrome (51364846315).

The spelling of 21342422003 in words is "twenty-one billion, three hundred forty-two million, four hundred twenty-two thousand, three".