212041111 has 8 divisors (see below), whose sum is σ = 217534464. Its totient is φ = 206588760.

The previous prime is 212041097. The next prime is 212041201. The reversal of 212041111 is 111140212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212041111 is a prime.

It is a super-2 number, since 2×212041111² = 89922865508228642, 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 = 212041091 and 212041100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212042111) 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, 366 + ... + 20596.

It is an arithmetic number, because the mean of its divisors is an integer number (27191808).

Almost surely, 2^212041111 is an apocalyptic number.

212041111 is a deficient number, since it is larger than the sum of its proper divisors (5493353).

212041111 is a wasteful number, since it uses less digits than its factorization.

212041111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20501.

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

The square root of 212041111 is about 14561.6314676619. The cubic root of 212041111 is about 596.3117363451.

Adding to 212041111 its reverse (111140212), we get a palindrome (323181323).

The spelling of 212041111 in words is "two hundred twelve million, forty-one thousand, one hundred eleven".