12220212122112 has 160 divisors (see below), whose sum is σ = 33331454418240. Its totient is φ = 3976411299840.

The previous prime is 12220212122089. The next prime is 12220212122113. The reversal of 12220212122112 is 21122121202221.

It is not an unprimeable number, because it can be changed into a prime (12220212122113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118108162 + ... + 118211582.

It is an arithmetic number, because the mean of its divisors is an integer number (208321590114).

Almost surely, 2^{12220212122112} is an apocalyptic number.

12220212122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220212122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16665727209120).

12220212122112 is an abundant number, since it is smaller than the sum of its proper divisors (21111242296128).

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

12220212122112 is a wasteful number, since it uses less digits than its factorization.

12220212122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105274 (or 105258 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12220212122112 its reverse (21122121202221), we get a palindrome (33342333324333).

The spelling of 12220212122112 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twelve".