21112110211102 has 8 divisors (see below), whose sum is σ = 31678437192696. Its totient is φ = 10552631146872.

The previous prime is 21112110211067. The next prime is 21112110211109. The reversal of 21112110211102 is 20111201121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112110211109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711971633 + ... + 1711983964.

It is an arithmetic number, because the mean of its divisors is an integer number (3959804649087).

Almost surely, 2^{21112110211102} is an apocalyptic number.

21112110211102 is a deficient number, since it is larger than the sum of its proper divisors (10566326981594).

21112110211102 is a wasteful number, since it uses less digits than its factorization.

21112110211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423958682.

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

Adding to 21112110211102 its reverse (20111201121112), we get a palindrome (41223311332214).

The spelling of 21112110211102 in words is "twenty-one trillion, one hundred twelve billion, one hundred ten million, two hundred eleven thousand, one hundred two".