12102212011 has 4 divisors (see below), whose sum is σ = 12103445952. Its totient is φ = 12100978072.

The previous prime is 12102211999. The next prime is 12102212027. The reversal of 12102212011 is 11021220121.

12102212011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12102212011 - 2¹⁹ = 12101687723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102211982 and 12102212000.

It is not an unprimeable number, because it can be changed into a prime (12102212411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602140 + ... + 621913.

It is an arithmetic number, because the mean of its divisors is an integer number (3025861488).

Almost surely, 2^12102212011 is an apocalyptic number.

12102212011 is a deficient number, since it is larger than the sum of its proper divisors (1233941).

12102212011 is an equidigital number, since it uses as much as digits as its factorization.

12102212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233940.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12102212011 its reverse (11021220121), we get a palindrome (23123432132).

The spelling of 12102212011 in words is "twelve billion, one hundred two million, two hundred twelve thousand, eleven".