11100101010121 has 2 divisors, whose sum is σ = 11100101010122. Its totient is φ = 11100101010120.

The previous prime is 11100101010101. The next prime is 11100101010209. The reversal of 11100101010121 is 12101010100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11099591876025 + 509134096 = 3331605^2 + 22564^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100101010121 - 2³⁷ = 10962662056649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100101010098 and 11100101010107.

It is not a weakly prime, because it can be changed into another prime (11100101010101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550050505060 + 5550050505061.

It is an arithmetic number, because the mean of its divisors is an integer number (5550050505061).

Almost surely, 2^{11100101010121} is an apocalyptic number.

It is an amenable number.

11100101010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100101010121 is an equidigital number, since it uses as much as digits as its factorization.

11100101010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11100101010121 its reverse (12101010100111), we get a palindrome (23201111110232).

The spelling of 11100101010121 in words is "eleven trillion, one hundred billion, one hundred one million, ten thousand, one hundred twenty-one".