21022714 has 4 divisors (see below), whose sum is σ = 31534074. Its totient is φ = 10511356.

The previous prime is 21022711. The next prime is 21022723. The reversal of 21022714 is 41722012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 2832489 = 4265^2 + 1683^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21022691 and 21022700.

It is not an unprimeable number, because it can be changed into a prime (21022711) by changing a digit.

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 as a sum of consecutive naturals, namely, 5255677 + ... + 5255680.

Almost surely, 2^21022714 is an apocalyptic number.

21022714 is a deficient number, since it is larger than the sum of its proper divisors (10511360).

21022714 is a wasteful number, since it uses less digits than its factorization.

21022714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511359.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 21022714 is about 4585.0533257531. The cubic root of 21022714 is about 275.9918519614.

Adding to 21022714 its reverse (41722012), we get a palindrome (62744726).

It can be divided in two parts, 2102271 and 4, that added together give a triangular number (2102275 = T₂₀₅₀).

The spelling of 21022714 in words is "twenty-one million, twenty-two thousand, seven hundred fourteen".