12111202001011 has 4 divisors (see below), whose sum is σ = 12111263952112. Its totient is φ = 12111140049912.

The previous prime is 12111202000993. The next prime is 12111202001053. The reversal of 12111202001011 is 11010020211121.

It is a happy number.

12111202001011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111202001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111202000982 and 12111202001000.

It is not an unprimeable number, because it can be changed into a prime (12111202001411) 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, 30681375 + ... + 31073608.

It is an arithmetic number, because the mean of its divisors is an integer number (3027815988028).

Almost surely, 2^{12111202001011} is an apocalyptic number.

12111202001011 is a deficient number, since it is larger than the sum of its proper divisors (61951101).

12111202001011 is an equidigital number, since it uses as much as digits as its factorization.

12111202001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61951100.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111202001011 its reverse (11010020211121), we get a palindrome (23121222212132).

The spelling of 12111202001011 in words is "twelve trillion, one hundred eleven billion, two hundred two million, one thousand, eleven".