200220221120021 has 8 divisors (see below), whose sum is σ = 202090288507800. Its totient is φ = 198350757089280.

The previous prime is 200220221119871. The next prime is 200220221120063. The reversal of 200220221120021 is 120021122022002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8334393694225 + 191885827425796 = 2886935^2 + 13852286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200220221120021 - 2¹⁰ = 200220221118997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200220221020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150172460 + ... + 151499861.

It is an arithmetic number, because the mean of its divisors is an integer number (25261286063475).

Almost surely, 2^{200220221120021} is an apocalyptic number.

It is an amenable number.

200220221120021 is a deficient number, since it is larger than the sum of its proper divisors (1870067387779).

200220221120021 is a wasteful number, since it uses less digits than its factorization.

200220221120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301678519.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200220221120021 its reverse (120021122022002), we get a palindrome (320241343142023).

The spelling of 200220221120021 in words is "two hundred trillion, two hundred twenty billion, two hundred twenty-one million, one hundred twenty thousand, twenty-one".