21110002 has 8 divisors (see below), whose sum is σ = 31705776. Its totient is φ = 10541412.

The previous prime is 21109987. The next prime is 21110027. The reversal of 21110002 is 20001112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728 + ... + 8035.

It is an arithmetic number, because the mean of its divisors is an integer number (3963222).

Almost surely, 2^21110002 is an apocalyptic number.

21110002 is a deficient number, since it is larger than the sum of its proper divisors (10595774).

21110002 is a wasteful number, since it uses less digits than its factorization.

21110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13592.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 21110002 is about 4594.5622207127. The cubic root of 21110002 is about 276.3733046319.

Adding to 21110002 its reverse (20001112), we get a palindrome (41111114).

The spelling of 21110002 in words is "twenty-one million, one hundred ten thousand, two".