20010201000121 has 2 divisors, whose sum is σ = 20010201000122. Its totient is φ = 20010201000120.

The previous prime is 20010201000077. The next prime is 20010201000157. The reversal of 20010201000121 is 12100010201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13866425775225 + 6143775224896 = 3723765^2 + 2478664^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010201000121 - 2¹³ = 20010200991929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010201000098 and 20010201000107.

It is not a weakly prime, because it can be changed into another prime (20010201000161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005100500060 + 10005100500061.

It is an arithmetic number, because the mean of its divisors is an integer number (10005100500061).

Almost surely, 2^{20010201000121} is an apocalyptic number.

It is an amenable number.

20010201000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010201000121 is an equidigital number, since it uses as much as digits as its factorization.

20010201000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010201000121 its reverse (12100010201002), we get a palindrome (32110211201123).

The spelling of 20010201000121 in words is "twenty trillion, ten billion, two hundred one million, one hundred twenty-one", and thus it is an aban number.