11000001010121 has 2 divisors, whose sum is σ = 11000001010122. Its totient is φ = 11000001010120.

The previous prime is 11000001010087. The next prime is 11000001010127. The reversal of 11000001010121 is 12101010000011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10317997562896 + 682003447225 = 3212164^2 + 825835^2 .

It is an emirp because it is prime and its reverse (12101010000011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11000001010121 - 2¹⁸ = 11000000747977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11000001010099 and 11000001010108.

It is not a weakly prime, because it can be changed into another prime (11000001010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500000505060 + 5500000505061.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000505061).

Almost surely, 2^{11000001010121} is an apocalyptic number.

It is an amenable number.

11000001010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000001010121 is an equidigital number, since it uses as much as digits as its factorization.

11000001010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11000001010121 its reverse (12101010000011), we get a palindrome (23101011010132).

The spelling of 11000001010121 in words is "eleven trillion, one million, ten thousand, one hundred twenty-one".