2281220221853 has 2 divisors, whose sum is σ = 2281220221854. Its totient is φ = 2281220221852.

The previous prime is 2281220221849. The next prime is 2281220221897. The reversal of 2281220221853 is 3581220221822.

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., 1438169382169 + 843050839684 = 1199237^2 + 918178^2 .

It is a cyclic number.

It is not a de Polignac number, because 2281220221853 - 2² = 2281220221849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2281220221153) 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, 1140610110926 + 1140610110927.

It is an arithmetic number, because the mean of its divisors is an integer number (1140610110927).

Almost surely, 2^{2281220221853} is an apocalyptic number.

It is an amenable number.

2281220221853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2281220221853 is an equidigital number, since it uses as much as digits as its factorization.

2281220221853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 2281220221853 in words is "two trillion, two hundred eighty-one billion, two hundred twenty million, two hundred twenty-one thousand, eight hundred fifty-three".