12101010011 has 4 divisors (see below), whose sum is σ = 12102618024. Its totient is φ = 12099402000.

The previous prime is 12101010007. The next prime is 12101010017. The reversal of 12101010011 is 11001010121.

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 12101010011 - 2² = 12101010007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101010017) 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, 792665 + ... + 807786.

It is an arithmetic number, because the mean of its divisors is an integer number (3025654506).

Almost surely, 2^12101010011 is an apocalyptic number.

12101010011 is a deficient number, since it is larger than the sum of its proper divisors (1608013).

12101010011 is an equidigital number, since it uses as much as digits as its factorization.

12101010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608012.

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

Adding to 12101010011 its reverse (11001010121), we get a palindrome (23102020132).

The spelling of 12101010011 in words is "twelve billion, one hundred one million, ten thousand, eleven".