12111211001211 has 64 divisors (see below), whose sum is σ = 20036790097920. Its totient is φ = 6354577152000.

The previous prime is 12111211001203. The next prime is 12111211001249. The reversal of 12111211001211 is 11210011211121.

It is not a de Polignac number, because 12111211001211 - 2³ = 12111211001203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111211001251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75790 + ... + 4922211.

It is an arithmetic number, because the mean of its divisors is an integer number (313074845280).

Almost surely, 2^{12111211001211} is an apocalyptic number.

12111211001211 is a deficient number, since it is larger than the sum of its proper divisors (7925579096709).

12111211001211 is a wasteful number, since it uses less digits than its factorization.

12111211001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998236.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12111211001211 its reverse (11210011211121), we get a palindrome (23321222212332).

The spelling of 12111211001211 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one thousand, two hundred eleven".