21220222102112 has 48 divisors (see below), whose sum is σ = 47973947112000. Its totient is φ = 9137894682240.

The previous prime is 21220222102111. The next prime is 21220222102117. The reversal of 21220222102112 is 21120122202212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220222102111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1586433362 + ... + 1586446737.

It is an arithmetic number, because the mean of its divisors is an integer number (999457231500).

Almost surely, 2^{21220222102112} is an apocalyptic number.

21220222102112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220222102112 is an abundant number, since it is smaller than the sum of its proper divisors (26753725009888).

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

21220222102112 is a wasteful number, since it uses less digits than its factorization.

21220222102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172880139 (or 3172880131 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21220222102112 its reverse (21120122202212), we get a palindrome (42340344304324).

The spelling of 21220222102112 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred two thousand, one hundred twelve".