21433340422 has 16 divisors (see below), whose sum is σ = 34804369152. Its totient is φ = 9840516480.

The previous prime is 21433340399. The next prime is 21433340471. The reversal of 21433340422 is 22404333412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153043 + ... + 2162974.

It is an arithmetic number, because the mean of its divisors is an integer number (2175273072).

Almost surely, 2^21433340422 is an apocalyptic number.

21433340422 is a deficient number, since it is larger than the sum of its proper divisors (13371028730).

21433340422 is a wasteful number, since it uses less digits than its factorization.

21433340422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316223.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21433340422 its reverse (22404333412), we get a palindrome (43837673834).

The spelling of 21433340422 in words is "twenty-one billion, four hundred thirty-three million, three hundred forty thousand, four hundred twenty-two".