212144111 has 8 divisors (see below), whose sum is σ = 221606880. Its totient is φ = 202701312.

The previous prime is 212144081. The next prime is 212144143. The reversal of 212144111 is 111441212.

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 212144111 - 2⁶ = 212144047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212144111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212144161) 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, 19295 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (27700860).

Almost surely, 2^212144111 is an apocalyptic number.

212144111 is a deficient number, since it is larger than the sum of its proper divisors (9462769).

212144111 is a wasteful number, since it uses less digits than its factorization.

212144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985.

The product of its digits is 64, while the sum is 17.

The square root of 212144111 is about 14565.1677298959. The cubic root of 212144111 is about 596.4082744900.

Adding to 212144111 its reverse (111441212), we get a palindrome (323585323).

The spelling of 212144111 in words is "two hundred twelve million, one hundred forty-four thousand, one hundred eleven".