12102201221111 has 4 divisors (see below), whose sum is σ = 12102209883432. Its totient is φ = 12102192558792.

The previous prime is 12102201221107. The next prime is 12102201221129. The reversal of 12102201221111 is 11112210220121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12102201221111 - 2² = 12102201221107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12102201221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102201221711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704521 + ... + 5206706.

It is an arithmetic number, because the mean of its divisors is an integer number (3025552470858).

Almost surely, 2^{12102201221111} is an apocalyptic number.

12102201221111 is a deficient number, since it is larger than the sum of its proper divisors (8662321).

12102201221111 is an equidigital number, since it uses as much as digits as its factorization.

12102201221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662320.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12102201221111 its reverse (11112210220121), we get a palindrome (23214411441232).

The spelling of 12102201221111 in words is "twelve trillion, one hundred two billion, two hundred one million, two hundred twenty-one thousand, one hundred eleven".