21341111 has 8 divisors (see below), whose sum is σ = 23347200. Its totient is φ = 19346040.

The previous prime is 21341093. The next prime is 21341141. The reversal of 21341111 is 11114312.

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

It is a cyclic number.

It is not a de Polignac number, because 21341111 - 2¹⁴ = 21324727 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 (21341141) 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, 1610 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (2918400).

Almost surely, 2^21341111 is an apocalyptic number.

21341111 is a deficient number, since it is larger than the sum of its proper divisors (2006089).

21341111 is a wasteful number, since it uses less digits than its factorization.

21341111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509.

The product of its digits is 24, while the sum is 14.

The square root of 21341111 is about 4619.6440339056. The cubic root of 21341111 is about 277.3782102255.

Adding to 21341111 its reverse (11114312), we get a palindrome (32455423).

The spelling of 21341111 in words is "twenty-one million, three hundred forty-one thousand, one hundred eleven".