21143303342 has 16 divisors (see below), whose sum is σ = 38377761120. Its totient is φ = 8528391168.

The previous prime is 21143303317. The next prime is 21143303351. The reversal of 21143303342 is 24330334112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44418467 + ... + 44418942.

It is an arithmetic number, because the mean of its divisors is an integer number (2398610070).

Almost surely, 2^21143303342 is an apocalyptic number.

21143303342 is a deficient number, since it is larger than the sum of its proper divisors (17234457778).

21143303342 is a wasteful number, since it uses less digits than its factorization.

21143303342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88837435.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21143303342 its reverse (24330334112), we get a palindrome (45473637454).

The spelling of 21143303342 in words is "twenty-one billion, one hundred forty-three million, three hundred three thousand, three hundred forty-two".