2020023120021 has 32 divisors (see below), whose sum is σ = 2886415274880. Its totient is φ = 1252105181184.

The previous prime is 2020023120007. The next prime is 2020023120041. The reversal of 2020023120021 is 1200213200202.

It is a happy number.

It is not a de Polignac number, because 2020023120021 - 2⁶ = 2020023119957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020023120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4899151 + ... + 5295443.

It is an arithmetic number, because the mean of its divisors is an integer number (90200477340).

Almost surely, 2^{2020023120021} is an apocalyptic number.

It is an amenable number.

2020023120021 is a deficient number, since it is larger than the sum of its proper divisors (866392154859).

2020023120021 is a wasteful number, since it uses less digits than its factorization.

2020023120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397525.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2020023120021 its reverse (1200213200202), we get a palindrome (3220236320223).

The spelling of 2020023120021 in words is "two trillion, twenty billion, twenty-three million, one hundred twenty thousand, twenty-one".