1002001220201 has 2 divisors, whose sum is σ = 1002001220202. Its totient is φ = 1002001220200.

The previous prime is 1002001220167. The next prime is 1002001220219. The reversal of 1002001220201 is 1020221002001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842659741225 + 159341478976 = 917965^2 + 399176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002001220201 - 2¹⁴ = 1002001203817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002001225201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501000610100 + 501000610101.

It is an arithmetic number, because the mean of its divisors is an integer number (501000610101).

Almost surely, 2^{1002001220201} is an apocalyptic number.

It is an amenable number.

1002001220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002001220201 is an equidigital number, since it uses as much as digits as its factorization.

1002001220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002001220201 its reverse (1020221002001), we get a palindrome (2022222222202).

The spelling of 1002001220201 in words is "one trillion, two billion, one million, two hundred twenty thousand, two hundred one".