222111222102 has 96 divisors (see below), whose sum is σ = 635282279424. Its totient is φ = 54297619200.

The previous prime is 222111222097. The next prime is 222111222131. The reversal of 222111222102 is 201222111222.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4689774 + ... + 4736897.

It is an arithmetic number, because the mean of its divisors is an integer number (6617523744).

Almost surely, 2^222111222102 is an apocalyptic number.

222111222102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222111222102 is an abundant number, since it is smaller than the sum of its proper divisors (413171057322).

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

222111222102 is a wasteful number, since it uses less digits than its factorization.

222111222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426714 (or 9426711 counting only the distinct ones).

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

Adding to 222111222102 its reverse (201222111222), we get a palindrome (423333333324).

The spelling of 222111222102 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred two".