21200200110111 has 32 divisors (see below), whose sum is σ = 31019825645568. Its totient is φ = 12772308493440.

The previous prime is 21200200110109. The next prime is 21200200110113. The reversal of 21200200110111 is 11101100200212.

It is an interprime number because it is at equal distance from previous prime (21200200110109) and next prime (21200200110113).

It is not a de Polignac number, because 21200200110111 - 2¹ = 21200200110109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200200110113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36057585 + ... + 36640821.

It is an arithmetic number, because the mean of its divisors is an integer number (969369551424).

Almost surely, 2^{21200200110111} is an apocalyptic number.

21200200110111 is a deficient number, since it is larger than the sum of its proper divisors (9819625535457).

21200200110111 is a wasteful number, since it uses less digits than its factorization.

21200200110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589791.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21200200110111 its reverse (11101100200212), we get a palindrome (32301300310323).

The spelling of 21200200110111 in words is "twenty-one trillion, two hundred billion, two hundred million, one hundred ten thousand, one hundred eleven".