111221202001241 has 2 divisors, whose sum is σ = 111221202001242. Its totient is φ = 111221202001240.

The previous prime is 111221202001177. The next prime is 111221202001303. The reversal of 111221202001241 is 142100202122111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96249912975616 + 14971289025625 = 9810704^2 + 3869275^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221202001241 - 2⁶ = 111221202001177 is a prime.

It is not a weakly prime, because it can be changed into another prime (111221202001541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610601000620 + 55610601000621.

It is an arithmetic number, because the mean of its divisors is an integer number (55610601000621).

Almost surely, 2^{111221202001241} is an apocalyptic number.

It is an amenable number.

111221202001241 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221202001241 is an equidigital number, since it uses as much as digits as its factorization.

111221202001241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111221202001241 its reverse (142100202122111), we get a palindrome (253321404123352).

The spelling of 111221202001241 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred two million, one thousand, two hundred forty-one".