212201221201222 has 64 divisors (see below), whose sum is σ = 355325352735744. Its totient is φ = 94216960535040.

The previous prime is 212201221201217. The next prime is 212201221201283. The reversal of 212201221201222 is 222102122102212.

It is a super-2 number, since 2×212201221201222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212201221201193 and 212201221201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1263371998 + ... + 1263539950.

It is an arithmetic number, because the mean of its divisors is an integer number (5551958636496).

Almost surely, 2^{212201221201222} is an apocalyptic number.

212201221201222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212201221201222 is a deficient number, since it is larger than the sum of its proper divisors (143124131534522).

212201221201222 is a wasteful number, since it uses less digits than its factorization.

212201221201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170413.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212201221201222 its reverse (222102122102212), we get a palindrome (434303343303434).

The spelling of 212201221201222 in words is "two hundred twelve trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-two".