21314111 has 24 divisors (see below), whose sum is σ = 27054720. Its totient is φ = 16432416.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314111 is 11141312.

It is not a de Polignac number, because 21314111 - 2²² = 17119807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50660 + ... + 51078.

It is an arithmetic number, because the mean of its divisors is an integer number (1127280).

Almost surely, 2^21314111 is an apocalyptic number.

21314111 is a deficient number, since it is larger than the sum of its proper divisors (5740609).

21314111 is a wasteful number, since it uses less digits than its factorization.

21314111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 482 counting only the distinct ones).

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

The square root of 21314111 is about 4616.7208059401. The cubic root of 21314111 is about 277.2611845740.

Adding to 21314111 its reverse (11141312), we get a palindrome (32455423).

The spelling of 21314111 in words is "twenty-one million, three hundred fourteen thousand, one hundred eleven".