12013011011 has 4 divisors (see below), whose sum is σ = 12427252800. Its totient is φ = 11598769224.

The previous prime is 12013010993. The next prime is 12013011047. The reversal of 12013011011 is 11011031021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11011031021 = 37 ⋅297595433.

It is a cyclic number.

It is not a de Polignac number, because 12013011011 - 2²² = 12008816707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12013010983 and 12013011001.

It is not an unprimeable number, because it can be changed into a prime (12013011071) 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, 207120851 + ... + 207120908.

It is an arithmetic number, because the mean of its divisors is an integer number (3106813200).

Almost surely, 2^12013011011 is an apocalyptic number.

12013011011 is a deficient number, since it is larger than the sum of its proper divisors (414241789).

12013011011 is an equidigital number, since it uses as much as digits as its factorization.

12013011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414241788.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 12013011011 its reverse (11011031021), we get a palindrome (23024042032).

The spelling of 12013011011 in words is "twelve billion, thirteen million, eleven thousand, eleven".