21414122 has 16 divisors (see below), whose sum is σ = 33418440. Its totient is φ = 10278912.

The previous prime is 21414119. The next prime is 21414193. The reversal of 21414122 is 22141412.

It can be written as a sum of positive squares in 4 ways, for example, as 19456921 + 1957201 = 4411^2 + 1399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21414122.

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 7 ways as a sum of consecutive naturals, for example, 10238 + ... + 12150.

Almost surely, 2^21414122 is an apocalyptic number.

21414122 is a deficient number, since it is larger than the sum of its proper divisors (12004318).

21414122 is a wasteful number, since it uses less digits than its factorization.

21414122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 128, while the sum is 17.

The square root of 21414122 is about 4627.5395190101. The cubic root of 21414122 is about 277.6941670610.

Adding to 21414122 its reverse (22141412), we get a palindrome (43555534).

It can be divided in two parts, 2141412 and 2, that multiplied together give a palindrome (4282824).

The spelling of 21414122 in words is "twenty-one million, four hundred fourteen thousand, one hundred twenty-two".