2020010120021 has 4 divisors (see below), whose sum is σ = 2020015861344. Its totient is φ = 2020004378700.

The previous prime is 2020010120017. The next prime is 2020010120083. The reversal of 2020010120021 is 1200210100202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2020010120021 - 2² = 2020010120017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020010119984 and 2020010120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020010129021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2305865 + ... + 3058926.

It is an arithmetic number, because the mean of its divisors is an integer number (505003965336).

Almost surely, 2^{2020010120021} is an apocalyptic number.

It is an amenable number.

2020010120021 is a deficient number, since it is larger than the sum of its proper divisors (5741323).

2020010120021 is an equidigital number, since it uses as much as digits as its factorization.

2020010120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741322.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2020010120021 its reverse (1200210100202), we get a palindrome (3220220220223).

The spelling of 2020010120021 in words is "two trillion, twenty billion, ten million, one hundred twenty thousand, twenty-one".