12121022210111 has 8 divisors (see below), whose sum is σ = 12648519070944. Its totient is φ = 11593566673920.

The previous prime is 12121022210023. The next prime is 12121022210123. The reversal of 12121022210111 is 11101222012121.

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 12121022210111 - 2¹⁴ = 12121022193727 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 12121022210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121022210611) 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, 9731030 + ... + 10905731.

It is an arithmetic number, because the mean of its divisors is an integer number (1581064883868).

Almost surely, 2^{12121022210111} is an apocalyptic number.

12121022210111 is a deficient number, since it is larger than the sum of its proper divisors (527496860833).

12121022210111 is a wasteful number, since it uses less digits than its factorization.

12121022210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662321.

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

Adding to 12121022210111 its reverse (11101222012121), we get a palindrome (23222244222232).

The spelling of 12121022210111 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, two hundred ten thousand, one hundred eleven".