21112201110102 has 8 divisors (see below), whose sum is σ = 42224402220216. Its totient is φ = 7037400370032.

The previous prime is 21112201110061. The next prime is 21112201110197. The reversal of 21112201110102 is 20101110221112.

It is a happy number.

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

21112201110102 is an admirable number.

It is a super-2 number, since 2×21112201110102² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1759350092503 + ... + 1759350092514.

It is an arithmetic number, because the mean of its divisors is an integer number (5278050277527).

Almost surely, 2^{21112201110102} is an apocalyptic number.

21112201110102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112201110102 is a wasteful number, since it uses less digits than its factorization.

21112201110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518700185022.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21112201110102 its reverse (20101110221112), we get a palindrome (41213311331214).

The spelling of 21112201110102 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred ten thousand, one hundred two".