111202212212101 has 2 divisors, whose sum is σ = 111202212212102. Its totient is φ = 111202212212100.

The previous prime is 111202212212089. The next prime is 111202212212129. The reversal of 111202212212101 is 101212212202111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111199872168225 + 2340043876 = 10545135^2 + 48374^2 .

It is a cyclic number.

It is not a de Polignac number, because 111202212212101 - 2⁹ = 111202212211589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202212212701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601106106050 + 55601106106051.

It is an arithmetic number, because the mean of its divisors is an integer number (55601106106051).

Almost surely, 2^{111202212212101} is an apocalyptic number.

It is an amenable number.

111202212212101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202212212101 is an equidigital number, since it uses as much as digits as its factorization.

111202212212101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111202212212101 its reverse (101212212202111), we get a palindrome (212414424414212).

The spelling of 111202212212101 in words is "one hundred eleven trillion, two hundred two billion, two hundred twelve million, two hundred twelve thousand, one hundred one".