12011202011 has 4 divisors (see below), whose sum is σ = 12208107024. Its totient is φ = 11814297000.

The previous prime is 12011201977. The next prime is 12011202017. The reversal of 12011202011 is 11020211021.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12011202011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011201983 and 12011202001.

It is not an unprimeable number, because it can be changed into a prime (12011202017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98452415 + ... + 98452536.

It is an arithmetic number, because the mean of its divisors is an integer number (3052026756).

Almost surely, 2^12011202011 is an apocalyptic number.

12011202011 is a deficient number, since it is larger than the sum of its proper divisors (196905013).

12011202011 is an equidigital number, since it uses as much as digits as its factorization.

12011202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196905012.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12011202011 its reverse (11020211021), we get a palindrome (23031413032).

The spelling of 12011202011 in words is "twelve billion, eleven million, two hundred two thousand, eleven".