12201121111 has 8 divisors (see below), whose sum is σ = 12844303920. Its totient is φ = 11558040192.

The previous prime is 12201121103. The next prime is 12201121123. The reversal of 12201121111 is 11112110221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12201121111 - 2³ = 12201121103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201121091 and 12201121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201121151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422511 + ... + 450463.

It is an arithmetic number, because the mean of its divisors is an integer number (1605537990).

Almost surely, 2^12201121111 is an apocalyptic number.

12201121111 is a deficient number, since it is larger than the sum of its proper divisors (643182809).

12201121111 is a wasteful number, since it uses less digits than its factorization.

12201121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50945.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12201121111 its reverse (11112110221), we get a palindrome (23313231332).

The spelling of 12201121111 in words is "twelve billion, two hundred one million, one hundred twenty-one thousand, one hundred eleven".