12100102011 has 12 divisors (see below), whose sum is σ = 17488728400. Its totient is φ = 8061748560.

The previous prime is 12100101989. The next prime is 12100102043. The reversal of 12100102011 is 11020100121.

It is a happy number.

It is not a de Polignac number, because 12100102011 - 2¹⁸ = 12099839867 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 = 12100101984 and 12100102002.

It is not an unprimeable number, because it can be changed into a prime (12100102051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400111 + ... + 429288.

Almost surely, 2^12100102011 is an apocalyptic number.

12100102011 is a deficient number, since it is larger than the sum of its proper divisors (5388626389).

12100102011 is a wasteful number, since it uses less digits than its factorization.

12100102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831026 (or 831023 counting only the distinct ones).

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

Adding to 12100102011 its reverse (11020100121), we get a palindrome (23120202132).

The spelling of 12100102011 in words is "twelve billion, one hundred million, one hundred two thousand, eleven".