21112102211102 has 96 divisors (see below), whose sum is σ = 38817190863360. Its totient is φ = 8577377988480.

The previous prime is 21112102211087. The next prime is 21112102211119. The reversal of 21112102211102 is 20111220121112.

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 47 ways as a sum of consecutive naturals, for example, 25847453 + ... + 26651735.

It is an arithmetic number, because the mean of its divisors is an integer number (404345738160).

Almost surely, 2^{21112102211102} is an apocalyptic number.

21112102211102 is a deficient number, since it is larger than the sum of its proper divisors (17705088652258).

21112102211102 is a wasteful number, since it uses less digits than its factorization.

21112102211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804526 (or 804519 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21112102211102 its reverse (20111220121112), we get a palindrome (41223322332214).

The spelling of 21112102211102 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, two hundred eleven thousand, one hundred two".