41012821 has 2 divisors, whose sum is σ = 41012822. Its totient is φ = 41012820.

The previous prime is 41012819. The next prime is 41012827. The reversal of 41012821 is 12821014.

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., 33477796 + 7535025 = 5786^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 41012821 - 2¹ = 41012819 is a prime.

Together with 41012819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41012827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20506410 + 20506411.

It is an arithmetic number, because the mean of its divisors is an integer number (20506411).

Almost surely, 2^41012821 is an apocalyptic number.

It is an amenable number.

41012821 is a deficient number, since it is larger than the sum of its proper divisors (1).

41012821 is an equidigital number, since it uses as much as digits as its factorization.

41012821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 41012821 is about 6404.1253110788. The cubic root of 41012821 is about 344.8576630511.

Adding to 41012821 its reverse (12821014), we get a palindrome (53833835).

It can be divided in two parts, 410 and 12821, that added together give a palindrome (13231).

The spelling of 41012821 in words is "forty-one million, twelve thousand, eight hundred twenty-one".