12100212111 has 64 divisors (see below), whose sum is σ = 19407790080. Its totient is φ = 6624737280.

The previous prime is 12100212101. The next prime is 12100212139. The reversal of 12100212111 is 11121200121.

It is not a de Polignac number, because 12100212111 - 2⁵ = 12100212079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100212101) 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, 8225106 + ... + 8226576.

It is an arithmetic number, because the mean of its divisors is an integer number (303246720).

Almost surely, 2^12100212111 is an apocalyptic number.

12100212111 is a deficient number, since it is larger than the sum of its proper divisors (7307577969).

12100212111 is a wasteful number, since it uses less digits than its factorization.

12100212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176.

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

Adding to 12100212111 its reverse (11121200121), we get a palindrome (23221412232).

The spelling of 12100212111 in words is "twelve billion, one hundred million, two hundred twelve thousand, one hundred eleven".