21342003244 has 12 divisors (see below), whose sum is σ = 37733542504. Its totient is φ = 10560991104.

The previous prime is 21342003217. The next prime is 21342003259. The reversal of 21342003244 is 44230024312.

It is a happy number.

It is a super-2 number, since 2×21342003244² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27502194 + ... + 27502969.

Almost surely, 2^21342003244 is an apocalyptic number.

It is an amenable number.

21342003244 is a deficient number, since it is larger than the sum of its proper divisors (16391539260).

21342003244 is a wasteful number, since it uses less digits than its factorization.

21342003244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005264 (or 55005262 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21342003244 its reverse (44230024312), we get a palindrome (65572027556).

It can be divided in two parts, 2134200 and 3244, that added together give a square (2137444 = 1462²).

The spelling of 21342003244 in words is "twenty-one billion, three hundred forty-two million, three thousand, two hundred forty-four".