21411112 has 16 divisors (see below), whose sum is σ = 40216500. Its totient is φ = 10686720.

The previous prime is 21411107. The next prime is 21411149. The reversal of 21411112 is 21111412.

It can be written as a sum of positive squares in 2 ways, for example, as 21399876 + 11236 = 4626^2 + 106^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21411092 and 21411101.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3264 + ... + 7312.

Almost surely, 2^21411112 is an apocalyptic number.

It is an amenable number.

21411112 is a deficient number, since it is larger than the sum of its proper divisors (18805388).

21411112 is a wasteful number, since it uses less digits than its factorization.

21411112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716 (or 4712 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 21411112 is about 4627.2142807525. The cubic root of 21411112 is about 277.6811554199.

Adding to 21411112 its reverse (21111412), we get a palindrome (42522524).

The spelling of 21411112 in words is "twenty-one million, four hundred eleven thousand, one hundred twelve".