1001201221049 has 2 divisors, whose sum is σ = 1001201221050. Its totient is φ = 1001201221048.

The previous prime is 1001201220997. The next prime is 1001201221051. The reversal of 1001201221049 is 9401221021001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684127494400 + 317073726649 = 827120^2 + 563093^2 .

It is an emirp because it is prime and its reverse (9401221021001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001201221049 - 2²⁰ = 1001200172473 is a prime.

Together with 1001201221051, 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 (1001201221249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600610524 + 500600610525.

It is an arithmetic number, because the mean of its divisors is an integer number (500600610525).

Almost surely, 2^{1001201221049} is an apocalyptic number.

It is an amenable number.

1001201221049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201221049 is an equidigital number, since it uses as much as digits as its factorization.

1001201221049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1001201221049 in words is "one trillion, one billion, two hundred one million, two hundred twenty-one thousand, forty-nine".