241220401311221 has 2 divisors, whose sum is σ = 241220401311222. Its totient is φ = 241220401311220.

The previous prime is 241220401311209. The next prime is 241220401311247. The reversal of 241220401311221 is 122113104022142.

It is an a-pointer prime, because the next prime (241220401311247) can be obtained adding 241220401311221 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158258161204900 + 82962240106321 = 12580070^2 + 9108361^2 .

It is a cyclic number.

It is not a de Polignac number, because 241220401311221 - 2⁶ = 241220401311157 is a prime.

It is a super-2 number, since 2×241220401311221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241220401311121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610200655610 + 120610200655611.

It is an arithmetic number, because the mean of its divisors is an integer number (120610200655611).

Almost surely, 2^{241220401311221} is an apocalyptic number.

It is an amenable number.

241220401311221 is a deficient number, since it is larger than the sum of its proper divisors (1).

241220401311221 is an equidigital number, since it uses as much as digits as its factorization.

241220401311221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 241220401311221 its reverse (122113104022142), we get a palindrome (363333505333363).

The spelling of 241220401311221 in words is "two hundred forty-one trillion, two hundred twenty billion, four hundred one million, three hundred eleven thousand, two hundred twenty-one".