200021122101111 has 16 divisors (see below), whose sum is σ = 273903551889408. Its totient is φ = 129743073367200.

The previous prime is 200021122101091. The next prime is 200021122101233. The reversal of 200021122101111 is 111101221120002.

It is a happy number.

It is not a de Polignac number, because 200021122101111 - 2¹⁴ = 200021122084727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021122103111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41520906 + ... + 46087176.

It is an arithmetic number, because the mean of its divisors is an integer number (17118971993088).

Almost surely, 2^{200021122101111} is an apocalyptic number.

200021122101111 is a deficient number, since it is larger than the sum of its proper divisors (73882429788297).

200021122101111 is a wasteful number, since it uses less digits than its factorization.

200021122101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960942.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 200021122101111 its reverse (111101221120002), we get a palindrome (311122343221113).

The spelling of 200021122101111 in words is "two hundred trillion, twenty-one billion, one hundred twenty-two million, one hundred one thousand, one hundred eleven".