641013228101 has 2 divisors, whose sum is σ = 641013228102. Its totient is φ = 641013228100.

The previous prime is 641013228091. The next prime is 641013228113. The reversal of 641013228101 is 101822310146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453502577476 + 187510650625 = 673426^2 + 433025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641013228101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641013228161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320506614050 + 320506614051.

It is an arithmetic number, because the mean of its divisors is an integer number (320506614051).

Almost surely, 2^641013228101 is an apocalyptic number.

It is an amenable number.

641013228101 is a deficient number, since it is larger than the sum of its proper divisors (1).

641013228101 is an equidigital number, since it uses as much as digits as its factorization.

641013228101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 641013228101 its reverse (101822310146), we get a palindrome (742835538247).

The spelling of 641013228101 in words is "six hundred forty-one billion, thirteen million, two hundred twenty-eight thousand, one hundred one".