200021122101091 has 2 divisors, whose sum is σ = 200021122101092. Its totient is φ = 200021122101090.

The previous prime is 200021122101067. The next prime is 200021122101233. The reversal of 200021122101091 is 190101221120002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200021122101091 - 2³¹ = 200018974617443 is a prime.

It is not a weakly prime, because it can be changed into another prime (200021122101061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010561050545 + 100010561050546.

It is an arithmetic number, because the mean of its divisors is an integer number (100010561050546).

Almost surely, 2^{200021122101091} is an apocalyptic number.

200021122101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021122101091 is an equidigital number, since it uses as much as digits as its factorization.

200021122101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 200021122101091 its reverse (190101221120002), we get a palindrome (390122343221093).

The spelling of 200021122101091 in words is "two hundred trillion, twenty-one billion, one hundred twenty-two million, one hundred one thousand, ninety-one".