21114005 has 8 divisors (see below), whose sum is σ = 27640224. Its totient is φ = 15355600.

The previous prime is 21113999. The next prime is 21114011. The reversal of 21114005 is 50041112.

It is an interprime number because it is at equal distance from previous prime (21113999) and next prime (21114011).

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

It is not a de Polignac number, because 21114005 - 2⁶ = 21113941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191891 + ... + 192000.

It is an arithmetic number, because the mean of its divisors is an integer number (3455028).

Almost surely, 2^21114005 is an apocalyptic number.

It is an amenable number.

21114005 is a deficient number, since it is larger than the sum of its proper divisors (6526219).

21114005 is a wasteful number, since it uses less digits than its factorization.

21114005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383907.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 21114005 is about 4594.9978237209. The cubic root of 21114005 is about 276.3907726930.

Adding to 21114005 its reverse (50041112), we get a palindrome (71155117).

It can be divided in two parts, 2111 and 4005, that added together give a palindrome (6116).

The spelling of 21114005 in words is "twenty-one million, one hundred fourteen thousand, five".