20412111 has 8 divisors (see below), whose sum is σ = 27279360. Its totient is φ = 13576472.

The previous prime is 20412101. The next prime is 20412113. The reversal of 20412111 is 11121402.

It is a happy number.

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 20412111 - 2⁵ = 20412079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6351 + ... + 9008.

It is an arithmetic number, because the mean of its divisors is an integer number (3409920).

Almost surely, 2^20412111 is an apocalyptic number.

20412111 is a deficient number, since it is larger than the sum of its proper divisors (6867249).

20412111 is a wasteful number, since it uses less digits than its factorization.

20412111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15805.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 20412111 is about 4517.9764275613. The cubic root of 20412111 is about 273.2935028550.

Adding to 20412111 its reverse (11121402), we get a palindrome (31533513).

The spelling of 20412111 in words is "twenty million, four hundred twelve thousand, one hundred eleven".