242122012111 has 4 divisors (see below), whose sum is σ = 276710870992. Its totient is φ = 207533153232.

The previous prime is 242122012091. The next prime is 242122012123. The reversal of 242122012111 is 111210221242.

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 242122012111 - 2¹⁵ = 242121979343 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 (242122052111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17294429430 + ... + 17294429443.

It is an arithmetic number, because the mean of its divisors is an integer number (69177717748).

Almost surely, 2^242122012111 is an apocalyptic number.

242122012111 is a deficient number, since it is larger than the sum of its proper divisors (34588858881).

242122012111 is an equidigital number, since it uses as much as digits as its factorization.

242122012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34588858880.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 242122012111 its reverse (111210221242), we get a palindrome (353332233353).

The spelling of 242122012111 in words is "two hundred forty-two billion, one hundred twenty-two million, twelve thousand, one hundred eleven".