41312120221 has 4 divisors (see below), whose sum is σ = 41489425692. Its totient is φ = 41134814752.

The previous prime is 41312120177. The next prime is 41312120233. The reversal of 41312120221 is 12202121314.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5548015225 + 35764104996 = 74485^2 + 189114^2 .

It is a cyclic number.

It is not a de Polignac number, because 41312120221 - 2¹⁷ = 41311989149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41312120281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88652386 + ... + 88652851.

It is an arithmetic number, because the mean of its divisors is an integer number (10372356423).

Almost surely, 2^41312120221 is an apocalyptic number.

It is an amenable number.

41312120221 is a deficient number, since it is larger than the sum of its proper divisors (177305471).

41312120221 is a wasteful number, since it uses less digits than its factorization.

41312120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177305470.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 41312120221 its reverse (12202121314), we get a palindrome (53514241535).

The spelling of 41312120221 in words is "forty-one billion, three hundred twelve million, one hundred twenty thousand, two hundred twenty-one".