21066306622 has 8 divisors (see below), whose sum is σ = 31700417616. Its totient is φ = 10499500752.

The previous prime is 21066306559. The next prime is 21066306623. The reversal of 21066306622 is 22660366012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21066306623) 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 3 ways as a sum of consecutive naturals, for example, 16825498 + ... + 16826749.

It is an arithmetic number, because the mean of its divisors is an integer number (3962552202).

Almost surely, 2^21066306622 is an apocalyptic number.

21066306622 is a deficient number, since it is larger than the sum of its proper divisors (10634110994).

21066306622 is a wasteful number, since it uses less digits than its factorization.

21066306622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33652562.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 21066306622 in words is "twenty-one billion, sixty-six million, three hundred six thousand, six hundred twenty-two".