41220135521 has 24 divisors (see below), whose sum is σ = 43032012480. Its totient is φ = 39481356960.

The previous prime is 41220135503. The next prime is 41220135527. The reversal of 41220135521 is 12553102214.

It is not a de Polignac number, because 41220135521 - 2³⁰ = 40146393697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41220135527) 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 23 ways as a sum of consecutive naturals, for example, 56234471 + ... + 56235203.

It is an arithmetic number, because the mean of its divisors is an integer number (1793000520).

Almost surely, 2^41220135521 is an apocalyptic number.

It is an amenable number.

41220135521 is a deficient number, since it is larger than the sum of its proper divisors (1811876959).

41220135521 is a wasteful number, since it uses less digits than its factorization.

41220135521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 41220135521 its reverse (12553102214), we get a palindrome (53773237735).

The spelling of 41220135521 in words is "forty-one billion, two hundred twenty million, one hundred thirty-five thousand, five hundred twenty-one".