2020020121 has 12 divisors (see below), whose sum is σ = 2452384768. Its totient is φ = 1629594432.

The previous prime is 2020020091. The next prime is 2020020127. The reversal of 2020020121 is 1210200202.

It is not a de Polignac number, because 2020020121 - 2⁹ = 2020019609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020020098 and 2020020107.

It is not an unprimeable number, because it can be changed into a prime (2020020127) 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 in 11 ways as a sum of consecutive naturals, for example, 497241 + ... + 501286.

Almost surely, 2^2020020121 is an apocalyptic number.

It is an amenable number.

2020020121 is a deficient number, since it is larger than the sum of its proper divisors (432364647).

2020020121 is an equidigital number, since it uses as much as digits as its factorization.

2020020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998568 (or 998551 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2020020121 is about 44944.6339511181. The cubic root of 2020020121 is about 1264.1110620596. Note that the first 3 decimals are identical.

Adding to 2020020121 its reverse (1210200202), we get a palindrome (3230220323).

The spelling of 2020020121 in words is "two billion, twenty million, twenty thousand, one hundred twenty-one".