21041127 has 20 divisors (see below), whose sum is σ = 31590680. Its totient is φ = 14014296.

The previous prime is 21041117. The next prime is 21041191. The reversal of 21041127 is 72114012.

It is not a de Polignac number, because 21041127 - 2¹¹ = 21039079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19149 + ... + 20217.

It is an arithmetic number, because the mean of its divisors is an integer number (1579534).

Almost surely, 2^21041127 is an apocalyptic number.

21041127 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21041127 is a deficient number, since it is larger than the sum of its proper divisors (10549553).

21041127 is an frugal number, since it uses more digits than its factorization.

21041127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 21041127 is about 4587.0608236648. The cubic root of 21041127 is about 276.0724053893.

Adding to 21041127 its reverse (72114012), we get a palindrome (93155139).

The spelling of 21041127 in words is "twenty-one million, forty-one thousand, one hundred twenty-seven".