242221211 has 8 divisors (see below), whose sum is σ = 253031424. Its totient is φ = 231434280.

The previous prime is 242221207. The next prime is 242221229. The reversal of 242221211 is 112122242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242221211 - 2² = 242221207 is a prime.

It is a super-2 number, since 2×242221211² = 117342230116613042, which contains 22 as substring.

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 242221211.

It is not an unprimeable number, because it can be changed into a prime (242221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17480 + ... + 28106.

It is an arithmetic number, because the mean of its divisors is an integer number (31628928).

Almost surely, 2^242221211 is an apocalyptic number.

242221211 is a deficient number, since it is larger than the sum of its proper divisors (10810213).

242221211 is a wasteful number, since it uses less digits than its factorization.

242221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11641.

The product of its digits is 128, while the sum is 17.

The square root of 242221211 is about 15563.4575528704. The cubic root of 242221211 is about 623.3577888607.

Adding to 242221211 its reverse (112122242), we get a palindrome (354343453).

The spelling of 242221211 in words is "two hundred forty-two million, two hundred twenty-one thousand, two hundred eleven".