41215121 has 2 divisors, whose sum is σ = 41215122. Its totient is φ = 41215120.

The previous prime is 41215091. The next prime is 41215147. The reversal of 41215121 is 12151214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24364096 + 16851025 = 4936^2 + 4105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41215121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41215121.

It is not a weakly prime, because it can be changed into another prime (41215621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20607560 + 20607561.

It is an arithmetic number, because the mean of its divisors is an integer number (20607561).

Almost surely, 2^41215121 is an apocalyptic number.

It is an amenable number.

41215121 is a deficient number, since it is larger than the sum of its proper divisors (1).

41215121 is an equidigital number, since it uses as much as digits as its factorization.

41215121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 17.

The square root of 41215121 is about 6419.9003886353. The cubic root of 41215121 is about 345.4237487257.

Adding to 41215121 its reverse (12151214), we get a palindrome (53366335).

The spelling of 41215121 in words is "forty-one million, two hundred fifteen thousand, one hundred twenty-one".