200021120202021 has 32 divisors (see below), whose sum is σ = 267468926524800. Its totient is φ = 132961089945600.

The previous prime is 200021120202019. The next prime is 200021120202031. The reversal of 200021120202021 is 120202021120002.

It is not a de Polignac number, because 200021120202021 - 2¹ = 200021120202019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021120202031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3759698221 + ... + 3759751421.

It is an arithmetic number, because the mean of its divisors is an integer number (8358403953900).

Almost surely, 2^{200021120202021} is an apocalyptic number.

It is an amenable number.

200021120202021 is a deficient number, since it is larger than the sum of its proper divisors (67447806322779).

200021120202021 is a wasteful number, since it uses less digits than its factorization.

200021120202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56549.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200021120202021 its reverse (120202021120002), we get a palindrome (320223141322023).

The spelling of 200021120202021 in words is "two hundred trillion, twenty-one billion, one hundred twenty million, two hundred two thousand, twenty-one".