12201121011 has 16 divisors (see below), whose sum is σ = 16391809280. Its totient is φ = 8072304480.

The previous prime is 12201121007. The next prime is 12201121021. The reversal of 12201121011 is 11012110221.

It is not a de Polignac number, because 12201121011 - 2² = 12201121007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201121021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1472466 + ... + 1480728.

It is an arithmetic number, because the mean of its divisors is an integer number (1024488080).

Almost surely, 2^12201121011 is an apocalyptic number.

12201121011 is a deficient number, since it is larger than the sum of its proper divisors (4190688269).

12201121011 is a wasteful number, since it uses less digits than its factorization.

12201121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11946.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12201121011 its reverse (11012110221), we get a palindrome (23213231232).

The spelling of 12201121011 in words is "twelve billion, two hundred one million, one hundred twenty-one thousand, eleven".