21200211111110 has 16 divisors (see below), whose sum is σ = 40405108235616. Its totient is φ = 7981255947648.

The previous prime is 21200211111109. The next prime is 21200211111113. The reversal of 21200211111110 is 1111111200212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200211111113) 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, 62353561922 + ... + 62353562261.

It is an arithmetic number, because the mean of its divisors is an integer number (2525319264726).

Almost surely, 2^{21200211111110} is an apocalyptic number.

21200211111110 is a deficient number, since it is larger than the sum of its proper divisors (19204897124506).

21200211111110 is a wasteful number, since it uses less digits than its factorization.

21200211111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124707124207.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21200211111110 its reverse (1111111200212), we get a palindrome (22311322311322).

The spelling of 21200211111110 in words is "twenty-one trillion, two hundred billion, two hundred eleven million, one hundred eleven thousand, one hundred ten".