2020111020121 has 2 divisors, whose sum is σ = 2020111020122. Its totient is φ = 2020111020120.

The previous prime is 2020111020113. The next prime is 2020111020139. The reversal of 2020111020121 is 1210201110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500781804096 + 519329216025 = 1225064^2 + 720645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020111020121 - 2³ = 2020111020113 is a prime.

It is a super-2 number, since 2×2020111020121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2020111023121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010055510060 + 1010055510061.

It is an arithmetic number, because the mean of its divisors is an integer number (1010055510061).

Almost surely, 2^{2020111020121} is an apocalyptic number.

It is an amenable number.

2020111020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020111020121 is an equidigital number, since it uses as much as digits as its factorization.

2020111020121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2020111020121 its reverse (1210201110202), we get a palindrome (3230312130323).

The spelling of 2020111020121 in words is "two trillion, twenty billion, one hundred eleven million, twenty thousand, one hundred twenty-one".