21341121 has 8 divisors (see below), whose sum is σ = 28646400. Its totient is φ = 14131632.

The previous prime is 21341093. The next prime is 21341141. The reversal of 21341121 is 12114312.

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

It is not a de Polignac number, because 21341121 - 2⁶ = 21341057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21341121.

It is not an unprimeable number, because it can be changed into a prime (21341141) 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, 23425 + ... + 24318.

It is an arithmetic number, because the mean of its divisors is an integer number (3580800).

Almost surely, 2^21341121 is an apocalyptic number.

It is an amenable number.

21341121 is a deficient number, since it is larger than the sum of its proper divisors (7305279).

21341121 is a wasteful number, since it uses less digits than its factorization.

21341121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47895.

The product of its digits is 48, while the sum is 15.

The square root of 21341121 is about 4619.6451162400. The cubic root of 21341121 is about 277.3782535501.

Adding to 21341121 its reverse (12114312), we get a palindrome (33455433).

The spelling of 21341121 in words is "twenty-one million, three hundred forty-one thousand, one hundred twenty-one".