21220114 has 12 divisors (see below), whose sum is σ = 33813594. Its totient is φ = 9985664.

The previous prime is 21220109. The next prime is 21220153. The reversal of 21220114 is 41102212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 21003889 + 216225 = 4583^2 + 465^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21220094 and 21220103.

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 5 ways as a sum of consecutive naturals, for example, 17779 + ... + 18934.

Almost surely, 2^21220114 is an apocalyptic number.

21220114 is a deficient number, since it is larger than the sum of its proper divisors (12593480).

21220114 is a wasteful number, since it uses less digits than its factorization.

21220114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36749 (or 36732 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21220114 is about 4606.5294962694. The cubic root of 21220114 is about 276.8530023271.

Adding to 21220114 its reverse (41102212), we get a palindrome (62322326).

The spelling of 21220114 in words is "twenty-one million, two hundred twenty thousand, one hundred fourteen".