12201011011 has 4 divisors (see below), whose sum is σ = 13944012592. Its totient is φ = 10458009432.

The previous prime is 12201011003. The next prime is 12201011021. The reversal of 12201011011 is 11011010221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11011010221 = 71 ⋅155084651.

It is a cyclic number.

It is not a de Polignac number, because 12201011011 - 2³ = 12201011003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201011021) 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, 871500780 + ... + 871500793.

It is an arithmetic number, because the mean of its divisors is an integer number (3486003148).

Almost surely, 2^12201011011 is an apocalyptic number.

12201011011 is a deficient number, since it is larger than the sum of its proper divisors (1743001581).

12201011011 is an equidigital number, since it uses as much as digits as its factorization.

12201011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743001580.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12201011011 its reverse (11011010221), we get a palindrome (23212021232).

The spelling of 12201011011 in words is "twelve billion, two hundred one million, eleven thousand, eleven".