21112100011102 has 32 divisors (see below), whose sum is σ = 32757529098240. Its totient is φ = 10199320541280.

The previous prime is 21112100011087. The next prime is 21112100011141. The reversal of 21112100011102 is 20111000121112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8446603 + ... + 10656889.

It is an arithmetic number, because the mean of its divisors is an integer number (1023672784320).

Almost surely, 2^{21112100011102} is an apocalyptic number.

21112100011102 is a deficient number, since it is larger than the sum of its proper divisors (11645429087138).

21112100011102 is a wasteful number, since it uses less digits than its factorization.

21112100011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211736.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21112100011102 its reverse (20111000121112), we get a palindrome (41223100132214).

The spelling of 21112100011102 in words is "twenty-one trillion, one hundred twelve billion, one hundred million, eleven thousand, one hundred two".