12100121211 has 16 divisors (see below), whose sum is σ = 17140903200. Its totient is φ = 7578079488.

The previous prime is 12100121197. The next prime is 12100121213. The reversal of 12100121211 is 11212100121.

It is not a de Polignac number, because 12100121211 - 2⁵ = 12100121179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12100121213) 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, 1876266 + ... + 1882703.

It is an arithmetic number, because the mean of its divisors is an integer number (1071306450).

Almost surely, 2^12100121211 is an apocalyptic number.

12100121211 is a deficient number, since it is larger than the sum of its proper divisors (5040781989).

12100121211 is a wasteful number, since it uses less digits than its factorization.

12100121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759038.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12100121211 its reverse (11212100121), we get a palindrome (23312221332).

The spelling of 12100121211 in words is "twelve billion, one hundred million, one hundred twenty-one thousand, two hundred eleven".