12111222211102 has 8 divisors (see below), whose sum is σ = 20762095219056. Its totient is φ = 5190523804752.

The previous prime is 12111222211091. The next prime is 12111222211141. The reversal of 12111222211102 is 20111222211121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12111222211102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432543650383 + ... + 432543650410.

It is an arithmetic number, because the mean of its divisors is an integer number (2595261902382).

Almost surely, 2^{12111222211102} is an apocalyptic number.

12111222211102 is a deficient number, since it is larger than the sum of its proper divisors (8650873007954).

12111222211102 is an equidigital number, since it uses as much as digits as its factorization.

12111222211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865087300802.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12111222211102 its sum of digits (19), we get a palindrome (12111222211121).

Adding to 12111222211102 its reverse (20111222211121), we get a palindrome (32222444422223).

The spelling of 12111222211102 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, one hundred two".