200221020212021 has 2 divisors, whose sum is σ = 200221020212022. Its totient is φ = 200221020212020.

The previous prime is 200221020211969. The next prime is 200221020212029. The reversal of 200221020212021 is 120212020122002.

It is a happy number.

200221020212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188441785308100 + 11779234903921 = 13727410^2 + 3432089^2 .

It is a cyclic number.

It is not a de Polignac number, because 200221020212021 - 2⁶ = 200221020211957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200221020212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110510106010 + 100110510106011.

It is an arithmetic number, because the mean of its divisors is an integer number (100110510106011).

Almost surely, 2^{200221020212021} is an apocalyptic number.

It is an amenable number.

200221020212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221020212021 is an equidigital number, since it uses as much as digits as its factorization.

200221020212021 is an evil number, because the sum of its binary digits is even.

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

Adding to 200221020212021 its reverse (120212020122002), we get a palindrome (320433040334023).

The spelling of 200221020212021 in words is "two hundred trillion, two hundred twenty-one billion, twenty million, two hundred twelve thousand, twenty-one".