2021020120101 has 16 divisors (see below), whose sum is σ = 2855604548160. Its totient is φ = 1269157572480.

The previous prime is 2021020120039. The next prime is 2021020120117. The reversal of 2021020120101 is 1010210201202.

It is not a de Polignac number, because 2021020120101 - 2⁶ = 2021020120037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021020120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283290535 + ... + 283297668.

It is an arithmetic number, because the mean of its divisors is an integer number (178475284260).

Almost surely, 2^{2021020120101} is an apocalyptic number.

It is an amenable number.

2021020120101 is a deficient number, since it is larger than the sum of its proper divisors (834584428059).

2021020120101 is a wasteful number, since it uses less digits than its factorization.

2021020120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566588276.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2021020120101 its reverse (1010210201202), we get a palindrome (3031230321303).

The spelling of 2021020120101 in words is "two trillion, twenty-one billion, twenty million, one hundred twenty thousand, one hundred one".