11101010121121 has 2 divisors, whose sum is σ = 11101010121122. Its totient is φ = 11101010121120.

The previous prime is 11101010121067. The next prime is 11101010121193. The reversal of 11101010121121 is 12112101010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10909551367521 + 191458753600 = 3302961^2 + 437560^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101010121121 - 2¹⁵ = 11101010088353 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101010121521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550505060560 + 5550505060561.

It is an arithmetic number, because the mean of its divisors is an integer number (5550505060561).

Almost surely, 2^{11101010121121} is an apocalyptic number.

It is an amenable number.

11101010121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101010121121 is an equidigital number, since it uses as much as digits as its factorization.

11101010121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11101010121121 its reverse (12112101010111), we get a palindrome (23213111131232).

The spelling of 11101010121121 in words is "eleven trillion, one hundred one billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".