242212111 has 4 divisors (see below), whose sum is σ = 242290800. Its totient is φ = 242133424.

The previous prime is 242212109. The next prime is 242212127. The reversal of 242212111 is 111212242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111212242 = 2 ⋅55606121.

It is a cyclic number.

It is not a de Polignac number, because 242212111 - 2¹ = 242212109 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 (242212181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34531 + ... + 40948.

It is an arithmetic number, because the mean of its divisors is an integer number (60572700).

Almost surely, 2^242212111 is an apocalyptic number.

242212111 is a deficient number, since it is larger than the sum of its proper divisors (78689).

242212111 is an equidigital number, since it uses as much as digits as its factorization.

242212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78688.

The product of its digits is 64, while the sum is 16.

The square root of 242212111 is about 15563.1651986349. The cubic root of 242212111 is about 623.3499824608.

Adding to 242212111 its reverse (111212242), we get a palindrome (353424353).

The spelling of 242212111 in words is "two hundred forty-two million, two hundred twelve thousand, one hundred eleven".