21110008386 has 16 divisors (see below), whose sum is σ = 42614597664. Its totient is φ = 6970905984.

The previous prime is 21110008333. The next prime is 21110008393. The reversal of 21110008386 is 68380001112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16440175 + ... + 16441458.

It is an arithmetic number, because the mean of its divisors is an integer number (2663412354).

Almost surely, 2^21110008386 is an apocalyptic number.

21110008386 is an abundant number, since it is smaller than the sum of its proper divisors (21504589278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110008386 is a wasteful number, since it uses less digits than its factorization.

21110008386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32881745.

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 21110008386 its reverse (68380001112), we get a palindrome (89490009498).

The spelling of 21110008386 in words is "twenty-one billion, one hundred ten million, eight thousand, three hundred eighty-six".