21114105 has 8 divisors (see below), whose sum is σ = 33782592. Its totient is φ = 11260848.

The previous prime is 21114103. The next prime is 21114127. The reversal of 21114105 is 50141112.

It is a happy number.

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

It is not a de Polignac number, because 21114105 - 2¹ = 21114103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1407607 = 21114105 / (2 + 1 + 1 + 1 + 4 + 1 + 0 + 5).

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 7 ways as a sum of consecutive naturals, for example, 703789 + ... + 703818.

It is an arithmetic number, because the mean of its divisors is an integer number (4222824).

Almost surely, 2^21114105 is an apocalyptic number.

It is an amenable number.

21114105 is a deficient number, since it is larger than the sum of its proper divisors (12668487).

21114105 is a wasteful number, since it uses less digits than its factorization.

21114105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407615.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 21114105 is about 4595.0087051060. The cubic root of 21114105 is about 276.3912090390.

Adding to 21114105 its reverse (50141112), we get a palindrome (71255217).

It can be divided in two parts, 2111 and 4105, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 21114105 in words is "twenty-one million, one hundred fourteen thousand, one hundred five".