21220110200110 has 16 divisors (see below), whose sum is σ = 38204834252256. Its totient is φ = 8486124992928.

The previous prime is 21220110200071. The next prime is 21220110200123. The reversal of 21220110200110 is 1100201102212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239839449 + ... + 239927908.

It is an arithmetic number, because the mean of its divisors is an integer number (2387802140766).

Almost surely, 2^{21220110200110} is an apocalyptic number.

21220110200110 is a deficient number, since it is larger than the sum of its proper divisors (16984724052146).

21220110200110 is a wasteful number, since it uses less digits than its factorization.

21220110200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479771787.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21220110200110 its reverse (1100201102212), we get a palindrome (22320311302322).

The spelling of 21220110200110 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, two hundred thousand, one hundred ten".