10611210221 has 2 divisors, whose sum is σ = 10611210222. Its totient is φ = 10611210220.

The previous prime is 10611210179. The next prime is 10611210329. The reversal of 10611210221 is 12201211601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10264729225 + 346480996 = 101315^2 + 18614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10611210221 - 2¹⁸ = 10610948077 is a prime.

It is a super-2 number, since 2×10611210221² (a number of 21 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 10611210221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10611200221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305605110 + 5305605111.

It is an arithmetic number, because the mean of its divisors is an integer number (5305605111).

Almost surely, 2^10611210221 is an apocalyptic number.

It is an amenable number.

10611210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10611210221 is an equidigital number, since it uses as much as digits as its factorization.

10611210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10611210221 its reverse (12201211601), we get a palindrome (22812421822).

The spelling of 10611210221 in words is "ten billion, six hundred eleven million, two hundred ten thousand, two hundred twenty-one".