11010101221121 has 2 divisors, whose sum is σ = 11010101221122. Its totient is φ = 11010101221120.

The previous prime is 11010101221099. The next prime is 11010101221123. The reversal of 11010101221121 is 12112210101011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6150082564096 + 4860018657025 = 2479936^2 + 2204545^2 .

It is a cyclic number.

It is not a de Polignac number, because 11010101221121 - 2³⁸ = 10735223314177 is a prime.

Together with 11010101221123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010101221096 and 11010101221105.

It is not a weakly prime, because it can be changed into another prime (11010101221123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505050610560 + 5505050610561.

It is an arithmetic number, because the mean of its divisors is an integer number (5505050610561).

Almost surely, 2^{11010101221121} is an apocalyptic number.

It is an amenable number.

11010101221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11010101221121 is an equidigital number, since it uses as much as digits as its factorization.

11010101221121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11010101221121 its reverse (12112210101011), we get a palindrome (23122311322132).

The spelling of 11010101221121 in words is "eleven trillion, ten billion, one hundred one million, two hundred twenty-one thousand, one hundred twenty-one".