260211064221 has 8 divisors (see below), whose sum is σ = 385497872960. Its totient is φ = 173474042796.

The previous prime is 260211064199. The next prime is 260211064277. The reversal of 260211064221 is 122460112062.

260211064221 is a `hidden beast` number, since 2 + 6 + 0 + 2 + 1 + 10 + 642 + 2 + 1 = 666.

It is not a de Polignac number, because 260211064221 - 2⁹ = 260211063709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9637446823 = 260211064221 / (2 + 6 + 0 + 2 + 1 + 1 + 0 + 6 + 4 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260211024221) 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 7 ways as a sum of consecutive naturals, for example, 4818723385 + ... + 4818723438.

It is an arithmetic number, because the mean of its divisors is an integer number (48187234120).

Almost surely, 2^260211064221 is an apocalyptic number.

It is an amenable number.

260211064221 is a deficient number, since it is larger than the sum of its proper divisors (125286808739).

260211064221 is an equidigital number, since it uses as much as digits as its factorization.

260211064221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9637446832 (or 9637446826 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 260211064221 its reverse (122460112062), we get a palindrome (382671176283).

The spelling of 260211064221 in words is "two hundred sixty billion, two hundred eleven million, sixty-four thousand, two hundred twenty-one".