21102212111120 has 80 divisors (see below), whose sum is σ = 56073128828160. Its totient is φ = 7234845875712.

The previous prime is 21102212111077. The next prime is 21102212111137. The reversal of 21102212111120 is 2111121220112.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 20714834 + ... + 21709646.

It is an arithmetic number, because the mean of its divisors is an integer number (700914110352).

Almost surely, 2^{21102212111120} is an apocalyptic number.

21102212111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102212111120 is an abundant number, since it is smaller than the sum of its proper divisors (34970916717040).

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

21102212111120 is a wasteful number, since it uses less digits than its factorization.

21102212111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032712 (or 1032706 counting only the distinct ones).

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

Adding to 21102212111120 its reverse (2111121220112), we get a palindrome (23213333331232).

The spelling of 21102212111120 in words is "twenty-one trillion, one hundred two billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty".