21335313422 has 4 divisors (see below), whose sum is σ = 32002970136. Its totient is φ = 10667656710.

The previous prime is 21335313409. The next prime is 21335313473. The reversal of 21335313422 is 22431353312.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 5333828354 + ... + 5333828357.

It is an arithmetic number, because the mean of its divisors is an integer number (8000742534).

Almost surely, 2^21335313422 is an apocalyptic number.

21335313422 is a deficient number, since it is larger than the sum of its proper divisors (10667656714).

21335313422 is a wasteful number, since it uses less digits than its factorization.

21335313422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10667656713.

The product of its digits is 12960, while the sum is 29.

Adding to 21335313422 its reverse (22431353312), we get a palindrome (43766666734).

The spelling of 21335313422 in words is "twenty-one billion, three hundred thirty-five million, three hundred thirteen thousand, four hundred twenty-two".