41122721 has 2 divisors, whose sum is σ = 41122722. Its totient is φ = 41122720.

The previous prime is 41122699. The next prime is 41122751. The reversal of 41122721 is 12722114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38887696 + 2235025 = 6236^2 + 1495^2 .

It is a cyclic number.

It is not a de Polignac number, because 41122721 - 2¹⁰ = 41121697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41122693 and 41122702.

It is not a weakly prime, because it can be changed into another prime (41122751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20561360 + 20561361.

It is an arithmetic number, because the mean of its divisors is an integer number (20561361).

Almost surely, 2^41122721 is an apocalyptic number.

It is an amenable number.

41122721 is a deficient number, since it is larger than the sum of its proper divisors (1).

41122721 is an equidigital number, since it uses as much as digits as its factorization.

41122721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 20.

The square root of 41122721 is about 6412.6999773886. The cubic root of 41122721 is about 345.1654209162.

Adding to 41122721 its reverse (12722114), we get a palindrome (53844835).

It can be divided in two parts, 411 and 22721, that added together give a palindrome (23132).

The spelling of 41122721 in words is "forty-one million, one hundred twenty-two thousand, seven hundred twenty-one".