21114113 has 4 divisors (see below), whose sum is σ = 21460308. Its totient is φ = 20767920.

The previous prime is 21114103. The next prime is 21114127. The reversal of 21114113 is 31141112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1329409 + 19784704 = 1153^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 21114113 - 2⁴ = 21114097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114103) 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, 173006 + ... + 173127.

It is an arithmetic number, because the mean of its divisors is an integer number (5365077).

Almost surely, 2^21114113 is an apocalyptic number.

It is an amenable number.

21114113 is a deficient number, since it is larger than the sum of its proper divisors (346195).

21114113 is an equidigital number, since it uses as much as digits as its factorization.

21114113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346194.

The product of its digits is 24, while the sum is 14.

The square root of 21114113 is about 4595.0095756157. The cubic root of 21114113 is about 276.3912439466.

Adding to 21114113 its reverse (31141112), we get a palindrome (52255225).

The spelling of 21114113 in words is "twenty-one million, one hundred fourteen thousand, one hundred thirteen".