111204261241 has 2 divisors, whose sum is σ = 111204261242. Its totient is φ = 111204261240.

The previous prime is 111204261239. The next prime is 111204261317. The reversal of 111204261241 is 142162402111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108395685225 + 2808576016 = 329235^2 + 52996^2 .

It is a cyclic number.

It is not a de Polignac number, because 111204261241 - 2¹ = 111204261239 is a prime.

Together with 111204261239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111204261221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55602130620 + 55602130621.

It is an arithmetic number, because the mean of its divisors is an integer number (55602130621).

Almost surely, 2^111204261241 is an apocalyptic number.

It is an amenable number.

111204261241 is a deficient number, since it is larger than the sum of its proper divisors (1).

111204261241 is an equidigital number, since it uses as much as digits as its factorization.

111204261241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 111204261241 its reverse (142162402111), we get a palindrome (253366663352).

The spelling of 111204261241 in words is "one hundred eleven billion, two hundred four million, two hundred sixty-one thousand, two hundred forty-one".