21828189106 has 8 divisors (see below), whose sum is σ = 32752006704. Its totient is φ = 10910853540.

The previous prime is 21828189101. The next prime is 21828189139. The reversal of 21828189106 is 60198182812.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21828189101) 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, 1612080 + ... + 1625563.

It is an arithmetic number, because the mean of its divisors is an integer number (4094000838).

Almost surely, 2^21828189106 is an apocalyptic number.

21828189106 is a deficient number, since it is larger than the sum of its proper divisors (10923817598).

21828189106 is a wasteful number, since it uses less digits than its factorization.

21828189106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241016.

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 21828189106 in words is "twenty-one billion, eight hundred twenty-eight million, one hundred eighty-nine thousand, one hundred six".