20100011320121 has 2 divisors, whose sum is σ = 20100011320122. Its totient is φ = 20100011320120.

The previous prime is 20100011320061. The next prime is 20100011320133. The reversal of 20100011320121 is 12102311000102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17545333351225 + 2554677968896 = 4188715^2 + 1598336^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100011320121 - 2¹⁰ = 20100011319097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20100011320096 and 20100011320105.

It is not a weakly prime, because it can be changed into another prime (20100011320021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050005660060 + 10050005660061.

It is an arithmetic number, because the mean of its divisors is an integer number (10050005660061).

Almost surely, 2^{20100011320121} is an apocalyptic number.

It is an amenable number.

20100011320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100011320121 is an equidigital number, since it uses as much as digits as its factorization.

20100011320121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20100011320121 its reverse (12102311000102), we get a palindrome (32202322320223).

The spelling of 20100011320121 in words is "twenty trillion, one hundred billion, eleven million, three hundred twenty thousand, one hundred twenty-one".