11121210102221 has 2 divisors, whose sum is σ = 11121210102222. Its totient is φ = 11121210102220.

The previous prime is 11121210102217. The next prime is 11121210102229. The reversal of 11121210102221 is 12220101212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11111482225321 + 9727876900 = 3333389^2 + 98630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121210102221 - 2² = 11121210102217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11121210102221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121210102229) 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 as a sum of consecutive naturals, namely, 5560605051110 + 5560605051111.

It is an arithmetic number, because the mean of its divisors is an integer number (5560605051111).

Almost surely, 2^{11121210102221} is an apocalyptic number.

It is an amenable number.

11121210102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121210102221 is an equidigital number, since it uses as much as digits as its factorization.

11121210102221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11121210102221 its reverse (12220101212111), we get a palindrome (23341311314332).

The spelling of 11121210102221 in words is "eleven trillion, one hundred twenty-one billion, two hundred ten million, one hundred two thousand, two hundred twenty-one".