21042114111 has 12 divisors (see below), whose sum is σ = 30408388920. Its totient is φ = 14021511120.

The previous prime is 21042114097. The next prime is 21042114173. The reversal of 21042114111 is 11141124012.

21042114111 is a `hidden beast` number, since 210 + 42 + 1 + 1 + 411 + 1 = 666.

It is not a de Polignac number, because 21042114111 - 2⁶ = 21042114047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21042114011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 526741 + ... + 565278.

It is an arithmetic number, because the mean of its divisors is an integer number (2534032410).

Almost surely, 2^21042114111 is an apocalyptic number.

21042114111 is a deficient number, since it is larger than the sum of its proper divisors (9366274809).

21042114111 is a wasteful number, since it uses less digits than its factorization.

21042114111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094166 (or 1094163 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21042114111 its reverse (11141124012), we get a palindrome (32183238123).

Subtracting from 21042114111 its reverse (11141124012), we obtain a palindrome (9900990099).

The spelling of 21042114111 in words is "twenty-one billion, forty-two million, one hundred fourteen thousand, one hundred eleven".