41666671221 has 24 divisors (see below), whose sum is σ = 65404501344. Its totient is φ = 23522657760.

The previous prime is 41666671187. The next prime is 41666671229. The reversal of 41666671221 is 12217666614.

It is not a de Polignac number, because 41666671221 - 2⁹ = 41666670709 is a prime.

It is a super-2 number, since 2×41666671221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41666671229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1695310 + ... + 1719711.

It is an arithmetic number, because the mean of its divisors is an integer number (2725187556).

Almost surely, 2^41666671221 is an apocalyptic number.

It is an amenable number.

41666671221 is a deficient number, since it is larger than the sum of its proper divisors (23737830123).

41666671221 is a wasteful number, since it uses less digits than its factorization.

41666671221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415121 (or 3415114 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The spelling of 41666671221 in words is "forty-one billion, six hundred sixty-six million, six hundred seventy-one thousand, two hundred twenty-one".