2020017121 has 2 divisors, whose sum is σ = 2020017122. Its totient is φ = 2020017120.

The previous prime is 2020017119. The next prime is 2020017157. The reversal of 2020017121 is 1217100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1293121600 + 726895521 = 35960^2 + 26961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020017121 - 2¹ = 2020017119 is a prime.

Together with 2020017119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2020017095 and 2020017104.

It is not a weakly prime, because it can be changed into another prime (2020017101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010008560 + 1010008561.

It is an arithmetic number, because the mean of its divisors is an integer number (1010008561).

Almost surely, 2^2020017121 is an apocalyptic number.

It is an amenable number.

2020017121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020017121 is an equidigital number, since it uses as much as digits as its factorization.

2020017121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2020017121 is about 44944.6005767100. The cubic root of 2020017121 is about 1264.1104362680.

Adding to 2020017121 its reverse (1217100202), we get a palindrome (3237117323).

The spelling of 2020017121 in words is "two billion, twenty million, seventeen thousand, one hundred twenty-one".