12201111022121 has 8 divisors (see below), whose sum is σ = 13963520666880. Its totient is φ = 10443549823488.

The previous prime is 12201111022109. The next prime is 12201111022123. The reversal of 12201111022121 is 12122011110221.

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 12201111022121 - 2¹⁴ = 12201111005737 is a prime.

It is a super-2 number, since 2×12201111022121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12201111022121.

It is not an unprimeable number, because it can be changed into a prime (12201111022123) 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, 1212106136 + ... + 1212116201.

It is an arithmetic number, because the mean of its divisors is an integer number (1745440083360).

Almost surely, 2^{12201111022121} is an apocalyptic number.

It is an amenable number.

12201111022121 is a deficient number, since it is larger than the sum of its proper divisors (1762409644759).

12201111022121 is an equidigital number, since it uses as much as digits as its factorization.

12201111022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424223063.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12201111022121 its reverse (12122011110221), we get a palindrome (24323122132342).

The spelling of 12201111022121 in words is "twelve trillion, two hundred one billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".