11221021011121 has 2 divisors, whose sum is σ = 11221021011122. Its totient is φ = 11221021011120.

The previous prime is 11221021011097. The next prime is 11221021011131. The reversal of 11221021011121 is 12111012012211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10440782688400 + 780238322721 = 3231220^2 + 883311^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221021011121 - 2¹¹ = 11221021009073 is a prime.

It is a super-2 number, since 2×11221021011121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221021011095 and 11221021011104.

It is not a weakly prime, because it can be changed into another prime (11221021011131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610510505560 + 5610510505561.

It is an arithmetic number, because the mean of its divisors is an integer number (5610510505561).

Almost surely, 2^{11221021011121} is an apocalyptic number.

It is an amenable number.

11221021011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221021011121 is an equidigital number, since it uses as much as digits as its factorization.

11221021011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11221021011121 its reverse (12111012012211), we get a palindrome (23332033023332).

The spelling of 11221021011121 in words is "eleven trillion, two hundred twenty-one billion, twenty-one million, eleven thousand, one hundred twenty-one".