21102202211110 has 16 divisors (see below), whose sum is σ = 38131761509856. Its totient is φ = 8408036988928.

The previous prime is 21102202211081. The next prime is 21102202211147. The reversal of 21102202211110 is 1111220220112.

It is a super-4 number, since 4×21102202211110⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

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, 4105484242 + ... + 4105489381.

It is an arithmetic number, because the mean of its divisors is an integer number (2383235094366).

Almost surely, 2^{21102202211110} is an apocalyptic number.

21102202211110 is a deficient number, since it is larger than the sum of its proper divisors (17029559298746).

21102202211110 is a wasteful number, since it uses less digits than its factorization.

21102202211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210973887.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21102202211110 its reverse (1111220220112), we get a palindrome (22213422431222).

The spelling of 21102202211110 in words is "twenty-one trillion, one hundred two billion, two hundred two million, two hundred eleven thousand, one hundred ten".