641100340221 has 32 divisors (see below), whose sum is σ = 945407984256. Its totient is φ = 383201280000.

The previous prime is 641100340187. The next prime is 641100340229. The reversal of 641100340221 is 122043001146.

It is not a de Polignac number, because 641100340221 - 2¹¹ = 641100338173 is a prime.

It is a super-2 number, since 2×641100340221² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641100340191 and 641100340200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641100340229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482361 + ... + 1230801.

It is an arithmetic number, because the mean of its divisors is an integer number (29543999508).

Almost surely, 2^641100340221 is an apocalyptic number.

It is an amenable number.

641100340221 is a deficient number, since it is larger than the sum of its proper divisors (304307644035).

641100340221 is a wasteful number, since it uses less digits than its factorization.

641100340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748813.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 641100340221 its reverse (122043001146), we get a palindrome (763143341367).

The spelling of 641100340221 in words is "six hundred forty-one billion, one hundred million, three hundred forty thousand, two hundred twenty-one".