212220221122 has 64 divisors (see below), whose sum is σ = 397037620224. Its totient is φ = 82833710400.

The previous prime is 212220221119. The next prime is 212220221173. The reversal of 212220221122 is 221122022212.

212220221122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212220221122.

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 31 ways as a sum of consecutive naturals, for example, 11879497 + ... + 11897347.

It is an arithmetic number, because the mean of its divisors is an integer number (6203712816).

Almost surely, 2^212220221122 is an apocalyptic number.

212220221122 is a deficient number, since it is larger than the sum of its proper divisors (184817399102).

212220221122 is a wasteful number, since it uses less digits than its factorization.

212220221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18743.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212220221122 its reverse (221122022212), we get a palindrome (433342243334).

The spelling of 212220221122 in words is "two hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-two".