12111221002102 has 4 divisors (see below), whose sum is σ = 18166831503156. Its totient is φ = 6055610501050.

The previous prime is 12111221002091. The next prime is 12111221002121. The reversal of 12111221002102 is 20120012211121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3027805250524 + ... + 3027805250527.

It is an arithmetic number, because the mean of its divisors is an integer number (4541707875789).

Almost surely, 2^{12111221002102} is an apocalyptic number.

12111221002102 is a deficient number, since it is larger than the sum of its proper divisors (6055610501054).

12111221002102 is an equidigital number, since it uses as much as digits as its factorization.

12111221002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055610501053.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111221002102 its reverse (20120012211121), we get a palindrome (32231233213223).

The spelling of 12111221002102 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-one million, two thousand, one hundred two".