12102011 has 16 divisors (see below), whose sum is σ = 13335840. Its totient is φ = 10936320.

The previous prime is 12102001. The next prime is 12102017. The reversal of 12102011 is 11020121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102011 is a prime.

It is a super-3 number, since 3×12102011³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12102011.

It is not an unprimeable number, because it can be changed into a prime (12102017) 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, 67520 + ... + 67698.

It is an arithmetic number, because the mean of its divisors is an integer number (833490).

Almost surely, 2^12102011 is an apocalyptic number.

12102011 is a deficient number, since it is larger than the sum of its proper divisors (1233829).

12102011 is a wasteful number, since it uses less digits than its factorization.

12102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 12102011 is about 3478.7944751020. The cubic root of 12102011 is about 229.5897602037.

Adding to 12102011 its reverse (11020121), we get a palindrome (23122132).

It can be divided in two parts, 1 and 2102011, that added together give a palindrome (2102012).

The spelling of 12102011 in words is "twelve million, one hundred two thousand, eleven".