222111201222 has 32 divisors (see below), whose sum is σ = 495324581760. Its totient is φ = 73775446920.

The previous prime is 222111201217. The next prime is 222111201223. The reversal of 222111201222 is 222102111222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222111201195 and 222111201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7251804 + ... + 7282367.

It is an arithmetic number, because the mean of its divisors is an integer number (15478893180).

Almost surely, 2^222111201222 is an apocalyptic number.

222111201222 is an abundant number, since it is smaller than the sum of its proper divisors (273213380538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111201222 is a wasteful number, since it uses less digits than its factorization.

222111201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14534465 (or 14534459 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222111201222 its reverse (222102111222), we get a palindrome (444213312444).

The spelling of 222111201222 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred one thousand, two hundred twenty-two".