12021101220112 has 40 divisors (see below), whose sum is σ = 24094319572440. Its totient is φ = 5803217495040.

The previous prime is 12021101220097. The next prime is 12021101220131. The reversal of 12021101220112 is 21102210112021.

It can be written as a sum of positive squares in 4 ways, for example, as 2059351281936 + 9961749938176 = 1435044^2 + 3156224^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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 7 ways as a sum of consecutive naturals, for example, 65282412 + ... + 65466292.

It is an arithmetic number, because the mean of its divisors is an integer number (602357989311).

Almost surely, 2^{12021101220112} is an apocalyptic number.

It is an amenable number.

12021101220112 is an abundant number, since it is smaller than the sum of its proper divisors (12073218352328).

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

12021101220112 is a wasteful number, since it uses less digits than its factorization.

12021101220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324811 (or 324805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12021101220112 its reverse (21102210112021), we get a palindrome (33123311332133).

The spelling of 12021101220112 in words is "twelve trillion, twenty-one billion, one hundred one million, two hundred twenty thousand, one hundred twelve".