242210113455221 has 4 divisors (see below), whose sum is σ = 242210149663500. Its totient is φ = 242210077246944.

The previous prime is 242210113455161. The next prime is 242210113455229. The reversal of 242210113455221 is 122554311012242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84879626964196 + 157330486491025 = 9213014^2 + 12543145^2 .

It is a cyclic number.

It is not a de Polignac number, because 242210113455221 - 2²⁶ = 242210046346357 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 (242210113455229) 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, 4821896 + ... + 22531553.

It is an arithmetic number, because the mean of its divisors is an integer number (60552537415875).

Almost surely, 2^{242210113455221} is an apocalyptic number.

It is an amenable number.

242210113455221 is a deficient number, since it is larger than the sum of its proper divisors (36208279).

242210113455221 is an equidigital number, since it uses as much as digits as its factorization.

242210113455221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36208278.

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 242210113455221 its reverse (122554311012242), we get a palindrome (364764424467463).

The spelling of 242210113455221 in words is "two hundred forty-two trillion, two hundred ten billion, one hundred thirteen million, four hundred fifty-five thousand, two hundred twenty-one".