2201011121 has 2 divisors, whose sum is σ = 2201011122.
Its totient is φ = 2201011120.
The previous prime is 2201011117. The next prime is 2201011123. The reversal of 2201011121 is 1211101022.
Adding to 2201011121 its reverse (1211101022), we get a palindrome (3412112143).
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2196328225 + 4682896 = 46865^2 + 2164^2
It is a cyclic number.
It is not a de Polignac number, because 2201011121 - 22 = 2201011117 is a prime.
Together with 2201011123, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2201011123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100505560 + 1100505561.
It is an arithmetic number, because the mean of its divisors is an integer number (1100505561).
Almost surely, 22201011121 is an apocalyptic number.
It is an amenable number.
2201011121 is a deficient number, since it is larger than the sum of its proper divisors (1).
2201011121 is an equidigital number, since it uses as much as digits as its factorization.
2201011121 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 8, while the sum is 11.
The square root of 2201011121 is about 46914.9349461342.
The cubic root of 2201011121 is about 1300.7906671406.
The spelling of 2201011121 in words is "two billion, two hundred one million, eleven thousand, one hundred twenty-one".