21122014 has 16 divisors (see below), whose sum is σ = 32367600. Its totient is φ = 10335424.

The previous prime is 21122009. The next prime is 21122033. The reversal of 21122014 is 41022112.

It is a happy number.

It is a super-2 number, since 2×21122014² = 892278950832392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121985 and 21122003.

It is a congruent number.

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, 18492 + ... + 19600.

It is an arithmetic number, because the mean of its divisors is an integer number (2022975).

Almost surely, 2^21122014 is an apocalyptic number.

21122014 is a deficient number, since it is larger than the sum of its proper divisors (11245586).

21122014 is a wasteful number, since it uses less digits than its factorization.

21122014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307.

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

The square root of 21122014 is about 4595.8692322563. The cubic root of 21122014 is about 276.4257152800.

Adding to 21122014 its reverse (41022112), we get a palindrome (62144126).

The spelling of 21122014 in words is "twenty-one million, one hundred twenty-two thousand, fourteen".