1212111102211 has 16 divisors (see below), whose sum is σ = 1336610880000. Its totient is φ = 1094684232096.

The previous prime is 1212111102197. The next prime is 1212111102221. The reversal of 1212111102211 is 1122011112121.

It is not a de Polignac number, because 1212111102211 - 2²³ = 1212102713603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212111102221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13879501 + ... + 13966558.

It is an arithmetic number, because the mean of its divisors is an integer number (83538180000).

Almost surely, 2^{1212111102211} is an apocalyptic number.

1212111102211 is a deficient number, since it is larger than the sum of its proper divisors (124499777789).

1212111102211 is a wasteful number, since it uses less digits than its factorization.

1212111102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27846186.

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

Adding to 1212111102211 its reverse (1122011112121), we get a palindrome (2334122214332).

The spelling of 1212111102211 in words is "one trillion, two hundred twelve billion, one hundred eleven million, one hundred two thousand, two hundred eleven".