201222121222 has 16 divisors (see below), whose sum is σ = 323965997712. Its totient is φ = 93395600640.

The previous prime is 201222121213. The next prime is 201222121229. The reversal of 201222121222 is 222121222102.

It is a self number, because there is not a number n which added to its sum of digits gives 201222121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222121229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40533804 + ... + 40538767.

It is an arithmetic number, because the mean of its divisors is an integer number (20247874857).

Almost surely, 2^201222121222 is an apocalyptic number.

201222121222 is a deficient number, since it is larger than the sum of its proper divisors (122743876490).

201222121222 is a wasteful number, since it uses less digits than its factorization.

201222121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81072663.

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

Adding to 201222121222 its reverse (222121222102), we get a palindrome (423343343324).

The spelling of 201222121222 in words is "two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".