12111210201211 has 16 divisors (see below), whose sum is σ = 14105034331488. Its totient is φ = 10362532773120.

The previous prime is 12111210201203. The next prime is 12111210201229. The reversal of 12111210201211 is 11210201211121.

It is not a de Polignac number, because 12111210201211 - 2³ = 12111210201203 is a prime.

It is a super-2 number, since 2×12111210201211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111210201911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267604770 + ... + 267650023.

It is an arithmetic number, because the mean of its divisors is an integer number (881564645718).

Almost surely, 2^{12111210201211} is an apocalyptic number.

12111210201211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111210201211 is a deficient number, since it is larger than the sum of its proper divisors (1993824130277).

12111210201211 is an equidigital number, since it uses as much as digits as its factorization.

12111210201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535254843 (or 535254821 counting only the distinct ones).

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

Adding to 12111210201211 its reverse (11210201211121), we get a palindrome (23321411412332).

It can be divided in two parts, 121 and 11210201211, that multiplied together give a palindrome (1356434346531).

The spelling of 12111210201211 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, two hundred one thousand, two hundred eleven".