111212120210201 has 2 divisors, whose sum is σ = 111212120210202. Its totient is φ = 111212120210200.

The previous prime is 111212120210197. The next prime is 111212120210203. The reversal of 111212120210201 is 102012021212111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110614104120976 + 598016089225 = 10517324^2 + 773315^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212120210201 - 2² = 111212120210197 is a prime.

Together with 111212120210203, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111212120210201.

It is not a weakly prime, because it can be changed into another prime (111212120210203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606060105100 + 55606060105101.

It is an arithmetic number, because the mean of its divisors is an integer number (55606060105101).

Almost surely, 2^{111212120210201} is an apocalyptic number.

It is an amenable number.

111212120210201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212120210201 is an equidigital number, since it uses as much as digits as its factorization.

111212120210201 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 111212120210201 its reverse (102012021212111), we get a palindrome (213224141422312).

The spelling of 111212120210201 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, two hundred one".