212220111202112 has 112 divisors (see below), whose sum is σ = 459003316403520. Its totient is φ = 96763269378048.

The previous prime is 212220111202067. The next prime is 212220111202129. The reversal of 212220111202112 is 211202111022212.

It is a congruent number.

It is an unprimeable number.

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, 1901677388 + ... + 1901788980.

It is an arithmetic number, because the mean of its divisors is an integer number (4098243896460).

Almost surely, 2^{212220111202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212220111202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229501658201760).

212220111202112 is an abundant number, since it is smaller than the sum of its proper divisors (246783205201408).

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

212220111202112 is a wasteful number, since it uses less digits than its factorization.

212220111202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139240 (or 139230 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212220111202112 its reverse (211202111022212), we get a palindrome (423422222224324).

The spelling of 212220111202112 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred eleven million, two hundred two thousand, one hundred twelve".