111220022222201 has 2 divisors, whose sum is σ = 111220022222202. Its totient is φ = 111220022222200.

The previous prime is 111220022222159. The next prime is 111220022222207. The reversal of 111220022222201 is 102222220022111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110979883020601 + 240139201600 = 10534699^2 + 490040^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220022222201 - 2⁴² = 106821975711097 is a prime.

It is not a weakly prime, because it can be changed into another prime (111220022222207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610011111100 + 55610011111101.

It is an arithmetic number, because the mean of its divisors is an integer number (55610011111101).

Almost surely, 2^{111220022222201} is an apocalyptic number.

It is an amenable number.

111220022222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220022222201 is an equidigital number, since it uses as much as digits as its factorization.

111220022222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111220022222201 its reverse (102222220022111), we get a palindrome (213442242244312).

The spelling of 111220022222201 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-two million, two hundred twenty-two thousand, two hundred one".