212111411 has 4 divisors (see below), whose sum is σ = 213412872. Its totient is φ = 210809952.

The previous prime is 212111399. The next prime is 212111437. The reversal of 212111411 is 114111212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212111411 - 2¹⁴ = 212095027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212111111) by changing a digit.

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, 650486 + ... + 650811.

It is an arithmetic number, because the mean of its divisors is an integer number (53353218).

Almost surely, 2^212111411 is an apocalyptic number.

212111411 is a deficient number, since it is larger than the sum of its proper divisors (1301461).

212111411 is a wasteful number, since it uses less digits than its factorization.

212111411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301460.

The product of its digits is 16, while the sum is 14.

The square root of 212111411 is about 14564.0451454944. The cubic root of 212111411 is about 596.3776293582.

Adding to 212111411 its reverse (114111212), we get a palindrome (326222623).

It can be divided in two parts, 21211 and 1411, that added together give a palindrome (22622).

The spelling of 212111411 in words is "two hundred twelve million, one hundred eleven thousand, four hundred eleven".