2020121057 has 2 divisors, whose sum is σ = 2020121058. Its totient is φ = 2020121056.

The previous prime is 2020121029. The next prime is 2020121069. The reversal of 2020121057 is 7501210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1385030656 + 635090401 = 37216^2 + 25201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020121057 - 2¹² = 2020116961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020121017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010060528 + 1010060529.

It is an arithmetic number, because the mean of its divisors is an integer number (1010060529).

Almost surely, 2^2020121057 is an apocalyptic number.

It is an amenable number.

2020121057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020121057 is an equidigital number, since it uses as much as digits as its factorization.

2020121057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 2020121057 is about 44945.7568297609. The cubic root of 2020121057 is about 1264.1321166666.

Adding to 2020121057 its reverse (7501210202), we get a palindrome (9521331259).

The spelling of 2020121057 in words is "two billion, twenty million, one hundred twenty-one thousand, fifty-seven".