12011010101 has 4 divisors (see below), whose sum is σ = 12011558400. Its totient is φ = 12010461804.

The previous prime is 12011010091. The next prime is 12011010103. The reversal of 12011010101 is 10101011021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12011010101 - 2¹⁰ = 12011009077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239861 + ... + 285578.

It is an arithmetic number, because the mean of its divisors is an integer number (3002889600).

Almost surely, 2^12011010101 is an apocalyptic number.

It is an amenable number.

12011010101 is a deficient number, since it is larger than the sum of its proper divisors (548299).

12011010101 is an equidigital number, since it uses as much as digits as its factorization.

12011010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548298.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12011010101 its reverse (10101011021), we get a palindrome (22112021122).

The spelling of 12011010101 in words is "twelve billion, eleven million, ten thousand, one hundred one".