21014111 has 8 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 19976440.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014111 is 11141012.

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 21014111 - 2⁶ = 21014047 is a prime.

It is a super-2 number, since 2×21014111² = 883185722240642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21014092 and 21014101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014101) 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, 1106 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (2757888).

Almost surely, 2^21014111 is an apocalyptic number.

21014111 is a deficient number, since it is larger than the sum of its proper divisors (1048993).

21014111 is a wasteful number, since it uses less digits than its factorization.

21014111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 21014111 is about 4584.1150727267. The cubic root of 21014111 is about 275.9541993244.

Adding to 21014111 its reverse (11141012), we get a palindrome (32155123).

The spelling of 21014111 in words is "twenty-one million, fourteen thousand, one hundred eleven".