212211222011212 has 24 divisors (see below), whose sum is σ = 374205786071040. Its totient is φ = 105295288609680.

The previous prime is 212211222011171. The next prime is 212211222011227. The reversal of 212211222011212 is 212110222112212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226175989 + ... + 227112307.

It is an arithmetic number, because the mean of its divisors is an integer number (15591907752960).

Almost surely, 2^{212211222011212} is an apocalyptic number.

It is an amenable number.

212211222011212 is a deficient number, since it is larger than the sum of its proper divisors (161994564059828).

212211222011212 is a wasteful number, since it uses less digits than its factorization.

212211222011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368981 (or 1368979 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 212211222011212 its reverse (212110222112212), we get a palindrome (424321444123424).

The spelling of 212211222011212 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-two million, eleven thousand, two hundred twelve".