12111102011 has 8 divisors (see below), whose sum is σ = 12283357680. Its totient is φ = 11939018112.

The previous prime is 12111101963. The next prime is 12111102049. The reversal of 12111102011 is 11020111121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111102011 - 2²⁶ = 12043993147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111101983 and 12111102001.

It is not an unprimeable number, because it can be changed into a prime (12111102511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102551 + ... + 186383.

It is an arithmetic number, because the mean of its divisors is an integer number (1535419710).

Almost surely, 2^12111102011 is an apocalyptic number.

12111102011 is a deficient number, since it is larger than the sum of its proper divisors (172255669).

12111102011 is an equidigital number, since it uses as much as digits as its factorization.

12111102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85885.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12111102011 its reverse (11020111121), we get a palindrome (23131213132).

It can be divided in two parts, 1211110 and 2011, that added together give a palindrome (1213121).

The spelling of 12111102011 in words is "twelve billion, one hundred eleven million, one hundred two thousand, eleven".