21141105 has 8 divisors (see below), whose sum is σ = 33825792. Its totient is φ = 11275248.

The previous prime is 21141103. The next prime is 21141137. The reversal of 21141105 is 50114112.

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 21141105 - 2¹ = 21141103 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: 1409407 = 21141105 / (2 + 1 + 1 + 4 + 1 + 1 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (21141103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704689 + ... + 704718.

It is an arithmetic number, because the mean of its divisors is an integer number (4228224).

Almost surely, 2^21141105 is an apocalyptic number.

It is an amenable number.

21141105 is a deficient number, since it is larger than the sum of its proper divisors (12684687).

21141105 is a wasteful number, since it uses less digits than its factorization.

21141105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409415.

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

The square root of 21141105 is about 4597.9457369569. The cubic root of 21141105 is about 276.5089720849.

Adding to 21141105 its reverse (50114112), we get a palindrome (71255217).

The spelling of 21141105 in words is "twenty-one million, one hundred forty-one thousand, one hundred five".