21112514 has 8 divisors (see below), whose sum is σ = 31689228. Its totient is φ = 10549440.

The previous prime is 21112433. The next prime is 21112547. The reversal of 21112514 is 41521112.

It can be written as a sum of positive squares in 2 ways, for example, as 20857489 + 255025 = 4567^2 + 505^2 .

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 = 21112492 and 21112501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2534 + ... + 6974.

Almost surely, 2^21112514 is an apocalyptic number.

21112514 is a deficient number, since it is larger than the sum of its proper divisors (10576714).

21112514 is a wasteful number, since it uses less digits than its factorization.

21112514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820.

The product of its digits is 80, while the sum is 17.

The square root of 21112514 is about 4594.8355792128. The cubic root of 21112514 is about 276.3842666111.

Adding to 21112514 its reverse (41521112), we get a palindrome (62633626).

The spelling of 21112514 in words is "twenty-one million, one hundred twelve thousand, five hundred fourteen".