121201322111 has 8 divisors (see below), whose sum is σ = 121817401200. Its totient is φ = 120586553920.

The previous prime is 121201322089. The next prime is 121201322117. The reversal of 121201322111 is 111223102121.

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 121201322111 - 2²⁶ = 121134213247 is a prime.

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 121201322111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201322117) 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 7 ways as a sum of consecutive naturals, for example, 142076 + ... + 512433.

It is an arithmetic number, because the mean of its divisors is an integer number (15227175150).

Almost surely, 2^121201322111 is an apocalyptic number.

121201322111 is a deficient number, since it is larger than the sum of its proper divisors (616079089).

121201322111 is an equidigital number, since it uses as much as digits as its factorization.

121201322111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655449.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121201322111 its reverse (111223102121), we get a palindrome (232424424232).

The spelling of 121201322111 in words is "one hundred twenty-one billion, two hundred one million, three hundred twenty-two thousand, one hundred eleven".