41220021 has 8 divisors (see below), whose sum is σ = 55114560. Its totient is φ = 27402752.

The previous prime is 41220013. The next prime is 41220037. The reversal of 41220021 is 12002214.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41220021 - 2³ = 41220013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 41219979 and 41220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41220521) 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 7 ways as a sum of consecutive naturals, for example, 18060 + ... + 20213.

It is an arithmetic number, because the mean of its divisors is an integer number (6889320).

Almost surely, 2^41220021 is an apocalyptic number.

It is an amenable number.

41220021 is a deficient number, since it is larger than the sum of its proper divisors (13894539).

41220021 is a wasteful number, since it uses less digits than its factorization.

41220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38635.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 41220021 is about 6420.2820031522. The cubic root of 41220021 is about 345.4374371428.

Adding to 41220021 its reverse (12002214), we get a palindrome (53222235).

The spelling of 41220021 in words is "forty-one million, two hundred twenty thousand, twenty-one".