21712114 has 8 divisors (see below), whose sum is σ = 32737500. Its totient is φ = 10799616.

The previous prime is 21712109. The next prime is 21712133. The reversal of 21712114 is 41121712.

It can be written as a sum of positive squares in 2 ways, for example, as 21390625 + 321489 = 4625^2 + 567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21712091 and 21712100.

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 3 ways as a sum of consecutive naturals, for example, 27739 + ... + 28510.

Almost surely, 2^21712114 is an apocalyptic number.

21712114 is a deficient number, since it is larger than the sum of its proper divisors (11025386).

21712114 is a wasteful number, since it uses less digits than its factorization.

21712114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56444.

The product of its digits is 112, while the sum is 19.

The square root of 21712114 is about 4659.6259506531. The cubic root of 21712114 is about 278.9763386536.

Adding to 21712114 its reverse (41121712), we get a palindrome (62833826).

The spelling of 21712114 in words is "twenty-one million, seven hundred twelve thousand, one hundred fourteen".