212424430111 has 4 divisors (see below), whose sum is σ = 212657608224. Its totient is φ = 212191252000.

The previous prime is 212424430109. The next prime is 212424430129. The reversal of 212424430111 is 111034424212.

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 212424430111 - 2¹ = 212424430109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212424430151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116587690 + ... + 116589511.

It is an arithmetic number, because the mean of its divisors is an integer number (53164402056).

Almost surely, 2^212424430111 is an apocalyptic number.

212424430111 is a deficient number, since it is larger than the sum of its proper divisors (233178113).

212424430111 is an equidigital number, since it uses as much as digits as its factorization.

212424430111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233178112.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 212424430111 its reverse (111034424212), we get a palindrome (323458854323).

The spelling of 212424430111 in words is "two hundred twelve billion, four hundred twenty-four million, four hundred thirty thousand, one hundred eleven".