12111442102 has 8 divisors (see below), whose sum is σ = 18168040296. Its totient is φ = 6055428672.

The previous prime is 12111442093. The next prime is 12111442121. The reversal of 12111442102 is 20124411121.

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 12111442102.

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, 90108 + ... + 179839.

It is an arithmetic number, because the mean of its divisors is an integer number (2271005037).

Almost surely, 2^12111442102 is an apocalyptic number.

12111442102 is a deficient number, since it is larger than the sum of its proper divisors (6056598194).

12111442102 is a wasteful number, since it uses less digits than its factorization.

12111442102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292382.

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

Adding to 12111442102 its reverse (20124411121), we get a palindrome (32235853223).

It can be divided in two parts, 121114 and 42102, that added together give a square (163216 = 404²).

The spelling of 12111442102 in words is "twelve billion, one hundred eleven million, four hundred forty-two thousand, one hundred two".