211221221201222 has 32 divisors (see below), whose sum is σ = 321487050945600. Its totient is φ = 104060668096000.

The previous prime is 211221221201197. The next prime is 211221221201227. The reversal of 211221221201222 is 222102122122112.

It is a super-2 number, since 2×211221221201222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221221201227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2846571722 + ... + 2846645922.

It is an arithmetic number, because the mean of its divisors is an integer number (10046470342050).

Almost surely, 2^{211221221201222} is an apocalyptic number.

211221221201222 is a deficient number, since it is larger than the sum of its proper divisors (110265829744378).

211221221201222 is a wasteful number, since it uses less digits than its factorization.

211221221201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86032.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211221221201222 its reverse (222102122122112), we get a palindrome (433323343323334).

The spelling of 211221221201222 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-two".