242552533221 has 24 divisors (see below), whose sum is σ = 356313399104. Its totient is φ = 158960957760.

The previous prime is 242552533211. The next prime is 242552533231. The reversal of 242552533221 is 122335255242.

It is a happy number.

242552533221 is a `hidden beast` number, since 2 + 4 + 2 + 552 + 53 + 32 + 21 = 666.

242552533221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (242552533211) and next prime (242552533231).

It is not a de Polignac number, because 242552533221 - 2¹⁰ = 242552532197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242552533211) 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 23 ways as a sum of consecutive naturals, for example, 119320 + ... + 706641.

Almost surely, 2^242552533221 is an apocalyptic number.

It is an amenable number.

242552533221 is a deficient number, since it is larger than the sum of its proper divisors (113760865883).

242552533221 is a wasteful number, since it uses less digits than its factorization.

242552533221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826521 (or 826518 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 242552533221 its reverse (122335255242), we get a palindrome (364887788463).

The spelling of 242552533221 in words is "two hundred forty-two billion, five hundred fifty-two million, five hundred thirty-three thousand, two hundred twenty-one".