221411640711757 has 2 divisors, whose sum is σ = 221411640711758. Its totient is φ = 221411640711756.

The previous prime is 221411640711733. The next prime is 221411640711797. The reversal of 221411640711757 is 757117046114122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123192817799076 + 98218822912681 = 11099226^2 + 9910541^2 .

It is a cyclic number.

It is not a de Polignac number, because 221411640711757 - 2¹⁹ = 221411640187469 is a prime.

It is a super-2 number, since 2×221411640711757² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221411640711757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221411640711797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110705820355878 + 110705820355879.

It is an arithmetic number, because the mean of its divisors is an integer number (110705820355879).

Almost surely, 2^{221411640711757} is an apocalyptic number.

It is an amenable number.

221411640711757 is a deficient number, since it is larger than the sum of its proper divisors (1).

221411640711757 is an equidigital number, since it uses as much as digits as its factorization.

221411640711757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 658560, while the sum is 49.

Adding to 221411640711757 its reverse (757117046114122), we get a palindrome (978528686825879).

The spelling of 221411640711757 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred forty million, seven hundred eleven thousand, seven hundred fifty-seven".