12221020021112 has 16 divisors (see below), whose sum is σ = 26187900045360. Its totient is φ = 5237580009024.

The previous prime is 12221020021039. The next prime is 12221020021157. The reversal of 12221020021112 is 21112002012221.

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, 109116250133 + ... + 109116250244.

It is an arithmetic number, because the mean of its divisors is an integer number (1636743752835).

Almost surely, 2^{12221020021112} is an apocalyptic number.

It is an amenable number.

12221020021112 is an abundant number, since it is smaller than the sum of its proper divisors (13966880024248).

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

12221020021112 is a wasteful number, since it uses less digits than its factorization.

12221020021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218232500390 (or 218232500386 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221020021112 its reverse (21112002012221), we get a palindrome (33333022033333).

The spelling of 12221020021112 in words is "twelve trillion, two hundred twenty-one billion, twenty million, twenty-one thousand, one hundred twelve".