21118714 has 8 divisors (see below), whose sum is σ = 31711680. Its totient is φ = 10548156.

The previous prime is 21118663. The next prime is 21118717. The reversal of 21118714 is 41781112.

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

It is a super-3 number, since 3×21118714³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21118717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3004 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (3963960).

Almost surely, 2^21118714 is an apocalyptic number.

21118714 is a deficient number, since it is larger than the sum of its proper divisors (10592966).

21118714 is a wasteful number, since it uses less digits than its factorization.

21118714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11204.

The product of its digits is 448, while the sum is 25.

The square root of 21118714 is about 4595.5102001845. The cubic root of 21118714 is about 276.4113187303.

Adding to 21118714 its reverse (41781112), we get a palindrome (62899826).

The spelling of 21118714 in words is "twenty-one million, one hundred eighteen thousand, seven hundred fourteen".