12011201212011 has 4 divisors (see below), whose sum is σ = 16014934949352. Its totient is φ = 8007467474672.

The previous prime is 12011201212007. The next prime is 12011201212057. The reversal of 12011201212011 is 11021210211021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12011201212011 - 2² = 12011201212007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011201212061) 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, 2001866868666 + ... + 2001866868671.

It is an arithmetic number, because the mean of its divisors is an integer number (4003733737338).

Almost surely, 2^{12011201212011} is an apocalyptic number.

12011201212011 is a deficient number, since it is larger than the sum of its proper divisors (4003733737341).

12011201212011 is an equidigital number, since it uses as much as digits as its factorization.

12011201212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003733737340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011201212011 its reverse (11021210211021), we get a palindrome (23032411423032).

The spelling of 12011201212011 in words is "twelve trillion, eleven billion, two hundred one million, two hundred twelve thousand, eleven".