220710852261 has 12 divisors (see below), whose sum is σ = 318808639500. Its totient is φ = 147138687360.

The previous prime is 220710852251. The next prime is 220710852269. The reversal of 220710852261 is 162258017022.

It is a happy number.

220710852261 is a `hidden beast` number, since 2 + 2 + 0 + 71 + 0 + 8 + 522 + 61 = 666.

220710852261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 209045556225 + 11665296036 = 457215^2 + 108006^2 .

It is not a de Polignac number, because 220710852261 - 2⁷ = 220710852133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220710852269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1270365 + ... + 1433613.

It is an arithmetic number, because the mean of its divisors is an integer number (26567386625).

Almost surely, 2^220710852261 is an apocalyptic number.

It is an amenable number.

220710852261 is a deficient number, since it is larger than the sum of its proper divisors (98097787239).

220710852261 is a wasteful number, since it uses less digits than its factorization.

220710852261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313476 (or 313473 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 220710852261 its reverse (162258017022), we get a palindrome (382968869283).

The spelling of 220710852261 in words is "two hundred twenty billion, seven hundred ten million, eight hundred fifty-two thousand, two hundred sixty-one".