201221200111222 has 32 divisors (see below), whose sum is σ = 324514824122880. Its totient is φ = 93276628259040.

The previous prime is 201221200111219. The next prime is 201221200111259. The reversal of 201221200111222 is 222111002122102.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 201221200111222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9141508 + ... + 22045624.

It is an arithmetic number, because the mean of its divisors is an integer number (10141088253840).

Almost surely, 2^{201221200111222} is an apocalyptic number.

201221200111222 is a deficient number, since it is larger than the sum of its proper divisors (123293624011658).

201221200111222 is a wasteful number, since it uses less digits than its factorization.

201221200111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912916.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221200111222 its reverse (222111002122102), we get a palindrome (423332202233324).

The spelling of 201221200111222 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred million, one hundred eleven thousand, two hundred twenty-two".