41205115121 has 2 divisors, whose sum is σ = 41205115122. Its totient is φ = 41205115120.

The previous prime is 41205115109. The next prime is 41205115163. The reversal of 41205115121 is 12151150214.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21297316096 + 19907799025 = 145936^2 + 141095^2 .

It is a cyclic number.

It is not a de Polignac number, because 41205115121 - 2⁶ = 41205115057 is a prime.

It is not a weakly prime, because it can be changed into another prime (41205115921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20602557560 + 20602557561.

It is an arithmetic number, because the mean of its divisors is an integer number (20602557561).

Almost surely, 2^41205115121 is an apocalyptic number.

It is an amenable number.

41205115121 is a deficient number, since it is larger than the sum of its proper divisors (1).

41205115121 is an equidigital number, since it uses as much as digits as its factorization.

41205115121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 41205115121 its reverse (12151150214), we get a palindrome (53356265335).

The spelling of 41205115121 in words is "forty-one billion, two hundred five million, one hundred fifteen thousand, one hundred twenty-one".