12221012120111 has 2 divisors, whose sum is σ = 12221012120112. Its totient is φ = 12221012120110.

The previous prime is 12221012120069. The next prime is 12221012120117. The reversal of 12221012120111 is 11102121012221.

12221012120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (11102121012221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12221012120111 - 2³⁰ = 12219938378287 is a prime.

It is a super-4 number, since 4×12221012120111⁴ (a number of 53 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12221012120111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221012120117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110506060055 + 6110506060056.

It is an arithmetic number, because the mean of its divisors is an integer number (6110506060056).

Almost surely, 2^{12221012120111} is an apocalyptic number.

12221012120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221012120111 is an equidigital number, since it uses as much as digits as its factorization.

12221012120111 is an evil number, because the sum of its binary digits is even.

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

Adding to 12221012120111 its reverse (11102121012221), we get a palindrome (23323133132332).

The spelling of 12221012120111 in words is "twelve trillion, two hundred twenty-one billion, twelve million, one hundred twenty thousand, one hundred eleven".