20002020212021 has 16 divisors (see below), whose sum is σ = 20579930540928. Its totient is φ = 19434522182400.

The previous prime is 20002020212003. The next prime is 20002020212039. The reversal of 20002020212021 is 12021202020002.

It is an interprime number because it is at equal distance from previous prime (20002020212003) and next prime (20002020212039).

It is a cyclic number.

It is not a de Polignac number, because 20002020212021 - 2¹⁴ = 20002020195637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002020211987 and 20002020212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002020212821) 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, 6323465 + ... + 8943726.

It is an arithmetic number, because the mean of its divisors is an integer number (1286245658808).

Almost surely, 2^{20002020212021} is an apocalyptic number.

It is an amenable number.

20002020212021 is a deficient number, since it is larger than the sum of its proper divisors (577910328907).

20002020212021 is a wasteful number, since it uses less digits than its factorization.

20002020212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15267532.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20002020212021 its reverse (12021202020002), we get a palindrome (32023222232023).

The spelling of 20002020212021 in words is "twenty trillion, two billion, twenty million, two hundred twelve thousand, twenty-one".