21110221101110 has 64 divisors (see below), whose sum is σ = 40711794186240. Its totient is φ = 7853228083200.

The previous prime is 21110221101091. The next prime is 21110221101247. The reversal of 21110221101110 is 1110112201112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7531787 + ... + 9947273.

It is an arithmetic number, because the mean of its divisors is an integer number (636121784160).

Almost surely, 2^{21110221101110} is an apocalyptic number.

21110221101110 is a deficient number, since it is larger than the sum of its proper divisors (19601573085130).

21110221101110 is a wasteful number, since it uses less digits than its factorization.

21110221101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416121.

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

Adding to 21110221101110 its reverse (1110112201112), we get a palindrome (22220333302222).

The spelling of 21110221101110 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, one hundred one thousand, one hundred ten".