21214714 has 4 divisors (see below), whose sum is σ = 31822074. Its totient is φ = 10607356.

The previous prime is 21214703. The next prime is 21214741. The reversal of 21214714 is 41741212.

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., 20930625 + 284089 = 4575^2 + 533^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5303677 + ... + 5303680.

Almost surely, 2^21214714 is an apocalyptic number.

21214714 is a deficient number, since it is larger than the sum of its proper divisors (10607360).

21214714 is a wasteful number, since it uses less digits than its factorization.

21214714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607359.

The product of its digits is 448, while the sum is 22.

The square root of 21214714 is about 4605.9433344322. The cubic root of 21214714 is about 276.8295162289.

Adding to 21214714 its reverse (41741212), we get a palindrome (62955926).

The spelling of 21214714 in words is "twenty-one million, two hundred fourteen thousand, seven hundred fourteen".