21114886 has 16 divisors (see below), whose sum is σ = 34246800. Its totient is φ = 9705888.

The previous prime is 21114881. The next prime is 21114911. The reversal of 21114886 is 68841112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5485 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (2140425).

Almost surely, 2^21114886 is an apocalyptic number.

21114886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21114886 is a deficient number, since it is larger than the sum of its proper divisors (13131914).

21114886 is a wasteful number, since it uses less digits than its factorization.

21114886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303.

The product of its digits is 3072, while the sum is 31.

The square root of 21114886 is about 4595.0936878371. The cubic root of 21114886 is about 276.3946168537.

Adding to 21114886 its reverse (68841112), we get a palindrome (89955998).

The spelling of 21114886 in words is "twenty-one million, one hundred fourteen thousand, eight hundred eighty-six".