111222020201 has 2 divisors, whose sum is σ = 111222020202. Its totient is φ = 111222020200.

The previous prime is 111222020183. The next prime is 111222020281. The reversal of 111222020201 is 102020222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57792160000 + 53429860201 = 240400^2 + 231149^2 .

It is an emirp because it is prime and its reverse (102020222111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111222020201 - 2²² = 111217825897 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222020281) 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 as a sum of consecutive naturals, namely, 55611010100 + 55611010101.

It is an arithmetic number, because the mean of its divisors is an integer number (55611010101).

Almost surely, 2^111222020201 is an apocalyptic number.

It is an amenable number.

111222020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222020201 is an equidigital number, since it uses as much as digits as its factorization.

111222020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111222020201 its reverse (102020222111), we get a palindrome (213242242312).

The spelling of 111222020201 in words is "one hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred one".