242233212121 has 4 divisors (see below), whose sum is σ = 242250465744. Its totient is φ = 242215958500.

The previous prime is 242233212119. The next prime is 242233212131. The reversal of 242233212121 is 121212332242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242233212121 - 2¹ = 242233212119 is a prime.

It is a super-3 number, since 3×242233212121³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242233212131) 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, 8605735 + ... + 8633836.

It is an arithmetic number, because the mean of its divisors is an integer number (60562616436).

Almost surely, 2^242233212121 is an apocalyptic number.

It is an amenable number.

242233212121 is a deficient number, since it is larger than the sum of its proper divisors (17253623).

242233212121 is a wasteful number, since it uses less digits than its factorization.

242233212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17253622.

The product of its digits is 2304, while the sum is 25.

Adding to 242233212121 its reverse (121212332242), we get a palindrome (363445544363).

The spelling of 242233212121 in words is "two hundred forty-two billion, two hundred thirty-three million, two hundred twelve thousand, one hundred twenty-one".