41240401021221 has 16 divisors (see below), whose sum is σ = 55127112072768. Its totient is φ = 27423652256000.

The previous prime is 41240401021187. The next prime is 41240401021247. The reversal of 41240401021221 is 12212010404214.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 41240401021221 - 2³¹ = 41238253537573 is a prime.

It is a super-2 number, since 2×41240401021221² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 41240401021191 and 41240401021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41240401025221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23229130 + ... + 24941396.

It is an arithmetic number, because the mean of its divisors is an integer number (3445444504548).

Almost surely, 2^{41240401021221} is an apocalyptic number.

It is an amenable number.

41240401021221 is a deficient number, since it is larger than the sum of its proper divisors (13886711051547).

41240401021221 is a wasteful number, since it uses less digits than its factorization.

41240401021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732692.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 41240401021221 its reverse (12212010404214), we get a palindrome (53452411425435).

The spelling of 41240401021221 in words is "forty-one trillion, two hundred forty billion, four hundred one million, twenty-one thousand, two hundred twenty-one".