12100002111 has 12 divisors (see below), whose sum is σ = 17525408992. Its totient is φ = 8044685856.

The previous prime is 12100002011. The next prime is 12100002121. The reversal of 12100002111 is 11120000121.

It is a happy number.

It is not a de Polignac number, because 12100002111 - 2¹⁰ = 12100001087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100002093 and 12100002102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1828366 + ... + 1834971.

Almost surely, 2^12100002111 is an apocalyptic number.

12100002111 is a deficient number, since it is larger than the sum of its proper divisors (5425406881).

12100002111 is a wasteful number, since it uses less digits than its factorization.

12100002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663710 (or 3663707 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12100002111 its reverse (11120000121), we get a palindrome (23220002232).

The spelling of 12100002111 in words is "twelve billion, one hundred million, two thousand, one hundred eleven".