221041759831 has 16 divisors (see below), whose sum is σ = 233301988800. Its totient is φ = 209003528448.

The previous prime is 221041759817. The next prime is 221041759843. The reversal of 221041759831 is 138957140122.

It is a cyclic number.

It is not a de Polignac number, because 221041759831 - 2¹³ = 221041751639 is a prime.

It is a super-2 number, since 2×221041759831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041759331) 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 15 ways as a sum of consecutive naturals, for example, 10037725 + ... + 10059721.

It is an arithmetic number, because the mean of its divisors is an integer number (14581374300).

Almost surely, 2^221041759831 is an apocalyptic number.

221041759831 is a deficient number, since it is larger than the sum of its proper divisors (12260228969).

221041759831 is a wasteful number, since it uses less digits than its factorization.

221041759831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27018.

The product of its (nonzero) digits is 120960, while the sum is 43.

Adding to 221041759831 its reverse (138957140122), we get a palindrome (359998899953).

The spelling of 221041759831 in words is "two hundred twenty-one billion, forty-one million, seven hundred fifty-nine thousand, eight hundred thirty-one".